Playing different rhythms does not require two independent clocks. Both hands share the same beat. What differs is which hand starts a note, keeps holding, or releases at each point. Vertical alignment on the grand staff shows simultaneous starts; a longer note can continue past several notes in the other staff.
In the first bar below, both hands start on beat 1. On beat 2 only the right hand starts a new note. On beat 3 both start new notes. On beat 4 both hold. The right-hand durations are 1, 1, 2; the left-hand durations are 2, 2. In bar 2 the right hand begins with a two-beat note while the left keeps its two-half-note pattern.
Right hand now: C4 · 1 beat · Right-hand finger 1
Stopped. Select a note with Next note, or play with sound.
Left hand now: C3 · finger 5
Right hand above · left hand below. Finger numbers: 1 thumb, 2 index, 3 middle, 4 ring, 5 little.
Tempo: 60 quarter-note beats per minute. The count-in lasts 4 beats. Durations in the selected-note readout use quarter-note units. Tempo changes and Reset stop playback and select the first note. Audio starts only on request, plays once, and stops when hidden or off-screen. The tones are synthesized pitch guides, not a piano recording. A short release gap separates notes. Next note advances to the next attack in either hand. Held notes stay highlighted. There is no moving cursor. Start at low device volume.
Read the first combined score as a schedule on a single four-beat count. The right hand begins C4 on beat 1, E4 on beat 2, and G4 on beat 3. The first two notes are quarters, while G is a half note occupying beats 3 and 4. The left begins C3 on beat 1 and G3 on beat 3, both half notes. Adding each part's durations gives four beats. The parts differ in their attacks, but neither has a different bar length or a different counting speed.
This schedule gives three attack points in the first bar, not five. The right and left attacks on beat 1 occur together, as do their attacks on beat 3. Only beat 2 contains a right-hand attack without a left-hand attack. Beat 4 has no new attack in either hand. Keep saying 4 even though nothing new begins there. A beat is a unit of time, not a command to press a key. Confusing those ideas makes a long note turn into repeated notes or makes the count stop whenever the hands hold.
At the keyboard, finger 1 in the right and finger 5 in the left start their Cs together. On beat 2 the right changes to finger 3 on E4 while the left stays on C3. The left hand's task is therefore an active continuation of its written duration, not an attempt to copy or oppose the right hand's movement. On beat 3, right finger 5 and left thumb 1 begin their Gs together. Those different finger numbers are the planned result of the hands facing opposite directions over their positions.
Before sounding anything, point to each of those three attack locations on the grand staff while counting 1, 2, 3, 4. Look vertically at each location to find which staff has a new notehead. Then read the durations to find which earlier notes continue. The two operations answer different questions. A visible notehead marks a start; an earlier half note can remain active where no new head appears in its staff. Do not infer silence just because the next note in the other hand occupies a later horizontal position.
A rest belongs to its own part. If the right hand has a rest, the left hand need not stop. In the example below the left starts C3 on beat 1 while the right waits; the right enters on beat 2 with E4. Keep counting from the same 1 rather than starting a new count for the right hand.
Right hand now: Rest · 1 beat
Stopped. Select a note with Next note, or play with sound.
Left hand now: C3 · finger 5
Right hand above · left hand below. Finger numbers: 1 thumb, 2 index, 3 middle, 4 ring, 5 little.
Tempo: 60 quarter-note beats per minute. The count-in lasts 4 beats. Durations in the selected-note readout use quarter-note units. Tempo changes and Reset stop playback and select the first note. Audio starts only on request, plays once, and stops when hidden or off-screen. The tones are synthesized pitch guides, not a piano recording. A short release gap separates notes. Next note advances to the next attack in either hand. Held notes stay highlighted. There is no moving cursor. Start at low device volume.
The second bar reverses part of the first bar's difficulty. Its right-hand F4 lasts two beats, followed by E4 and C4 for one beat each. The bass again has C3 for two beats and G3 for two beats. On beat 1 both hands attack. On beat 2 both hold. On beat 3 both attack again, right on E4 and left on G3. On beat 4 only the right changes, to C4, while the left keeps G3. The solitary right-hand change has moved from beat 2 to beat 4.
This difference matters when diagnosing a performance that sounds correct for one bar and then loses coordination. Repeating the first bar's action pattern would put a new right-hand note on beat 2 of the second bar and omit its beat-4 change. The pitches might all remain familiar, but the durations would no longer match. Compare the notehead shapes before playing. In the first bar, the half note comes last in the right hand. In the second bar, it comes first. That written order determines where the holding happens.
Practice the second bar from its own beginning rather than reaching it only after the first. Place right finger 4 on F4 and left finger 5 on C3. Count both through beats 1 and 2. On 3, change to right finger 3 on E4 and left thumb 1 on G3. On 4, right thumb 1 plays C4. This final change is a third down in the right hand, with no new left-hand attack. Checking that exact destination keeps a coordination drill from becoming an unplanned finger substitution exercise.
Now examine the boundary between the bars. At the end of bar 1, both hands are holding G, one octave apart. At the next beat 1, the right descends to F4 and the left descends to C3. Both have new notes, even though both were holding just before the bar line. The transition therefore requires release and a new coordinated attack rather than a continuation of the two Gs. Practice the last two beats of bar 1 into the first two of bar 2 to distinguish that boundary from either bar's internal holding point.
The second player changes only the right hand's first event. A quarter rest occupies beat 1 where the first score had C4. The bass still starts C3 immediately. The right then enters E4 on beat 2 and moves to G4 on beat 3, holding through 4. This gives the same bar length as before because one beat of silence replaces one beat of sound. A rest is not an instruction to wait until you feel ready. Its duration is part of the coordination with the sounding bass.
Read the rest's staff location as belonging to the upper part. It does not extend down to cancel the left-hand C3. Likewise, the left half note does not authorize the right to enter early. Each staff supplies its own events within the shared measure. On beat 1 the right hand has no sounding key in this example. On beat 2 it begins E4 while the left is halfway through C3's duration. This is a delayed entry within a bar, not a second count-in that starts a new bar for the right hand.
Try a preparation experiment away from the keyboard. Count a full bar, then continue directly into the written bar. Say the next 1 without a right-hand tap, tap the right on 2, and tap both on 3. Keep counting 4 without a new tap. This distinguishes preparing the pulse from performing the written rest. When you move to the keys, the left C3 must sound on the written 1 after the preparatory count. If both hands wait until 2, you have shifted the bass rather than respected the upper rest.
Compare the two players silently with their scores visible. Starting at the first selected event, Next note in the rest example moves to the right-hand E4 entry while the left C3 remains selected. It does not create a sounding right-hand event on beat 1. Use that selection to verify which part waits, then close the timing question by counting at the keyboard. A selected rest and a selected held note can appear at the same moment because selection follows the written parts. Neither highlight is a report about sounds detected from your instrument.
When one hand copies the other's rhythm, isolate one bar and slow down. Check the release boundary as well as the attack: a half note starting on 1 ends when beat 3 begins. At that point the left changes from C3 to G3, even if the right has its own change.
The score highlight follows every attack in either hand. It is a guide to the written events, not a measurement of your playing. If you lose the pulse, stop, count in again, and practice a smaller span rather than chasing the playback at a faster tempo.
The start of a note does not fully describe its rhythm. In the first bar, left C3 begins on 1 and occupies two beats. Its boundary arrives at beat 3, when G3 begins. If you release C on beat 2 because the right changes then, the bass becomes shorter than written. If you keep C down while adding G on beat 3, you turn the bass line into overlapping pitches. Check that boundary by playing the left part alone, counting 1, 2 under C and 3, 4 under G.
At the right-hand G4 in bar 1, the boundary is the next bar's beat 1. A half note beginning on 3 lasts through 4, not until 4 begins. This distinction can cause a short final beat even when every attack was placed correctly. Say 3, then 4, then the next 1 while sustaining G until its change to F. There is no extra numbered beat after 4. The next 1 begins the next bar at the same spacing as all the previous beats.
Tapping is useful for attack order but does not naturally represent a key kept down. That is why a correct table-tapping pattern may still produce early releases at the keyboard. Compare a tap on beat 1 with pressing and retaining a single C key through beat 2. Add the right-hand beat-2 change only after the left hold is clear. The practical question is whether the right movement interrupts that hold. Keep the task small enough to observe this without also searching for several new pitches.
The synthesized sound has brief release gaps, so do not use its envelope as a precise model for how your fingers should connect two physical keys. Use the score for the duration relationships and the audio for the attack schedule. The page also cannot assess posture, hand movement, or comfortable key retention. If keeping one note down creates discomfort or a rigid position, stop and seek a more comfortable setup or in-person guidance. Holding through the written count does not mean adding continuous extra pressure after the key has sounded.
A useful simplification removes demands that are not causing the problem while keeping the relationship you need to learn. Suppose the right-hand E4 on beat 2 makes you repeat left C3. Keep the first bar's rhythm but play every right-hand event on C4 and every left-hand event on C3. The right still has quarter, quarter, half, and the left still has half, half. This differs from making both hands play quarters. Matching rhythms would remove the very beat-2 hold that needs attention.
Suppose instead that the second bar's final right-hand C4 arrives late while the left hold is secure. Keeping the original pitches may be more informative than reducing both parts. Play just beat 3 to beat 4 of that bar, right E4 to C4 with fingers 3 to 1, while the left holds G3. Check whether the right-hand third is the delay. If it is, find that pair without the bass, then restore the bass hold. Do not replace a specific note-finding problem with repeated full performances at a slower speed.
For a bar-line pause, keep the last Gs of bar 1 and the first F4 over C3 of bar 2. Count their actual placement rather than inventing a pause to arrange the hands. You can initially locate the destination without a pulse, release, and then try the connection with equal counts. If the move remains uncertain, reduce the number of surrounding notes. Returning to the first C of the piece every time gives many repetitions of its opening but few concentrated attempts at the boundary that caused the pause.
Use one observation per pass through the complete two-bar score. You might listen only for an unwanted left attack on beat 2, then check only whether the final G3 lasts through beat 4 of bar 2. These observations are more informative than a general judgment that the hands are or are not independent. The hands are coordinating different actions on one pulse. The static score, manual selections, and optional playback offer ways to inspect that schedule, but an independent counted attempt is still needed to find what your hands actually do.
What does each hand do on beat 2 of the first combined bar?
A half note beginning on beat 1 is still held during beat 2.
Right hand above · left hand below. Finger numbers: 1 thumb, 2 index, 3 middle, 4 ring, 5 little.
On beat 2, the right hand plays E4 with finger 3 while the left keeps C3 held with finger 5. Do not re-strike or release left-hand C yet. On beat 3, both hands change: right to G4 and left to G3.
Which hand plays first in the rest example, and when does the right hand join?
The rest is a counted quarter note of silence in the right-hand part.
Right hand above · left hand below. Finger numbers: 1 thumb, 2 index, 3 middle, 4 ring, 5 little.
Left-hand C3 begins on beat 1. The right hand remains silent until E4 on beat 2. On beat 3, both move to their Gs. Treating the rest as an extra count-in for both hands would delay the left hand and change the written coordination.
Your left hand keeps repeating whenever the right hand plays. What simpler drill preserves the skill you need?
Temporarily remove changing pitches but preserve the two rhythms.
Right hand above · left hand below. Finger numbers: 1 thumb, 2 index, 3 middle, 4 ring, 5 little.
Use repeated C4 quarter notes in the right and C3 half notes in the left. Press both on 1, right only on 2, both on 3, right only on 4. Hold each left-hand C until its next attack or the bar ends. Then restore the written pitches. This targets the rhythm error rather than adding more note-finding work.
MusicTheory.net lessons provide further explanations of notation, rhythm, and chords. Open Music Theory is a longer reference. The keyboard diagrams, exercises, and rock-style study here were made for these lessons. The Beethoven example uses a public-domain melody, transposed to C, not a modern published arrangement.
Robert Hutchinson's Music Theory for the 21st-Century Classroom provides optional explanations of staff notation. Its sections on meter, major-scale construction, inversions, and chord symbols support the corresponding theory explanations. These references do not assess physical technique or certify a playing level.
Casio CT-S300 product information is the reference for the likely instrument. The lessons do not depend on a particular button sequence, USB connection, or automatic accompaniment.