Hand Separation: Left, Right, and Both Hands
Master difficult passages by practicing each hand independently. Crescendo lets you focus on just the left hand, just the right hand, or both hands together.
Quick Overview
- ✓ Three modes — Both Hands, Right Hand Only (R), Left Hand Only (L)
- ✓ Visual dimming — The inactive hand's staff fades to 30% so you can focus on what matters
- ✓ Selective note checking — Only the active hand's notes are required to advance
- ✓ Set your default — Choose which mode to start with in Settings → Practice
1 Why Practice Hands Separately?
Playing piano with both hands isn't just twice as hard as playing with one hand—research suggests it's roughly four times as difficult because your brain must coordinate two independent sets of movements simultaneously.
Hand separation practice lets you:
- Reduce cognitive load — Focus on one thing at a time
- Build proper technique — Perfect fingering and phrasing without coordination pressure
- Strengthen memory — Each hand develops its own muscle memory
- Learn faster — Mastering each part separately often leads to faster overall progress
Even advanced pianists use hand separation when learning new pieces or tackling difficult passages. It's not a beginner-only technique.
2 The Three Modes
In the control bar during practice, you'll see a segmented button with three options:
Both Both Hands
All notes on all staves are checked. You must play every note correctly to advance the cursor. This is the default mode and what you'll use once you've practiced each hand separately.
R Right Hand Only
Only the treble staff (top staff) notes are checked. The bass staff fades to 30% opacity, and its notes are not required to advance.
The cursor still moves through all positions, but you only need to play the right hand notes.
L Left Hand Only
Only the bass staff (bottom staff) notes are checked. The treble staff fades to 30% opacity, and its notes are not required to advance.
Perfect for strengthening your non-dominant hand, which often needs extra attention.
3 How to Switch Modes
During practice:
- Look for the hand mode selector in the floating control island (the bar with playback controls)
- You'll see three buttons: Both, R, and L
- Tap the mode you want—the change takes effect immediately
- The inactive staff will smoothly fade to 30% opacity
To set your default mode:
- Go to Settings (gear icon)
- Scroll to the Practice section
- Find "Default hand mode"
- Choose Both, Right, or Left
Your default applies when you start a new practice session. You can always change modes during practice without affecting your default.
4 What You'll See
When you select a single-hand mode, the score display changes to help you focus:
Staff Dimming
The inactive staff (the hand you're not practicing) fades to 30% opacity. You can still see the notes—which helps with musical context—but they're visually de-emphasized.
Cursor Movement
The cursor still advances through all note positions, including positions where only the inactive hand has notes. At these positions, the cursor advances automatically since there's nothing for you to play.
Note Checking
Only notes from the active hand are checked. If you accidentally play a note from the inactive hand, it won't cause an error—it's simply ignored.
5 Recommended Practice Progression
Piano teachers generally recommend this approach for learning new pieces:
-
Start with your non-dominant hand (usually left)
Practice until you can play it without thinking about which notes come next -
Then practice your dominant hand
Master it independently—don't rush to combine -
Combine hands slowly
Start at a very slow tempo and work in small sections (1-2 measures) -
Continue periodic hands-separate practice
Even after you can play hands together, occasional separate practice reinforces memory
The "Eyes Closed" Test: If you can play each hand separately with your eyes closed, you're ready to combine them. If you need to watch your hands, spend more time on separate practice.
6 Special Cases
Single-Staff Pieces
For pieces with only one staff (like simple melodies), all three modes behave the same—all notes are checked regardless of mode selection.
Three or More Staves
For pieces with three or more staves (like piano + vocal arrangements or complex works like Liszt's Un Sospiro): Right Hand mode includes all staves except the bottom one, and Left Hand mode includes only the bottom staff.
Cross-Hand Passages
Note checking is based on which staff the notes appear on, not physical hand position. If your right hand crosses over to play bass clef notes, those notes are still considered "left hand" for mode purposes.
Practice Tips
Combine hand separation with A-B loops
For maximum efficiency, set a loop around a difficult passage and practice just one hand. Master that section with the left hand, then the right, then combine—all within the same loop region.
See Using A-B Loops for details.
Don't neglect your left hand
Most right-handed pianists find their left hand feels "weaker." This isn't about strength—it's about coordination and practice time. The left hand often gets less attention because melodies are typically in the right hand.
Make a conscious effort to spend equal or more time on left-hand practice, especially for passages where the left hand has the melody or complex patterns.
Practice slower than you think you need to
When practicing hands separately, use a tempo slow enough that you make no mistakes. Speed comes from accuracy, not the other way around.
A good rule: If you're making more than one mistake per run-through, slow down.
Sleep on it
Your brain consolidates muscle memory during sleep. If you're struggling to combine hands, try practicing each hand separately before bed, then attempting hands together the next day. Many pianists find the passage mysteriously easier after rest.
Troubleshooting
The hand mode buttons are grayed out
The hand mode selector is only active when a score is loaded. If the buttons are grayed out, make sure you have a piece open in practice view.
I selected Right Hand but both staves are still active
This happens with single-staff pieces. If your score only has one staff (no bass clef), hand separation has no effect since there's only one hand to practice.
Check your score—if it shows both treble and bass clefs, the mode should work. If you only see one clef, hand separation isn't applicable for that piece.
The cursor is advancing through positions where I have notes
If you're in Right Hand or Left Hand mode, positions that only contain notes for the inactive hand will auto-advance. This is expected behavior.
If the cursor is skipping notes that should be checked (notes on the active staff), ensure you're in the correct mode. Check the mode selector to confirm your selection.
My default mode keeps resetting
The default mode (set in Settings) applies when you start a new practice session. Changing modes during practice doesn't change your default—it only affects the current session.
To change what mode you start with, go to Settings → Practice → "Default hand mode" and select your preferred option.
Still Need Help?
If you have questions about hand separation practice or the modes aren't working as expected, we're here to help.
Response time: 2-3 business days