Drum Rhythm Pattern Trainer
[What You Can Do Here]
• Split a drum rhythm pattern into four parts — right hand, left hand, right foot, and left foot — and play it back while reading the notation.
• Think of each beat as a "group of 4" (four sixteenth notes) or a "group of 3" (an eighth-note triplet), and build rhythms by choosing which notes in the group to play.
• Each note in a group is either played (●) or not played (○), so a group of 4 has 16 patterns and a group of 3 has 8 patterns.
• For example, you can keep both hands on an eighth-note beat and cycle only the right foot through all 16 patterns.
[How to Use]
・Tap a position in the score to choose a rhythm for that beat and part. Tapping the foot area selects the right foot; select the left foot in the panel. Switch between groups of four (sixteenths) and three (triplets), then select a notation preview to apply it. Changing the subdivision converts all parts on that beat. Auto-advance pauses on the displayed pattern while you edit.
• Choose a basic beat or a practice menu from Choose a Rhythm. Trying a few is the quickest way to get started.
• In Build a Rhythm, pick "(1) Snare", "(2) Timekeeping", and "(3) Kick" to assemble a rhythm pattern.
• Tap / click the ●○ in the grid below the notation to turn each note on or off.
• Use the "16ths" / "Triplet" buttons in the grid to choose whether that beat is divided into sixteenth notes (group of 4) or a triplet (group of 3).
• In Pattern Practice, choose the part and the beats to change, then tap / click a pattern in the list to switch to it.
• Turn on "Auto-advance to the next pattern" and press play to move to the next pattern every few measures. The notation of the upcoming pattern is shown in advance.
• Use the speaker icons in Sound Settings to mute each part. Mute a part and play it yourself for practice.
• Pattern edits, sound changes, and BPM changes take effect instantly, even during playback.
• Pressing the "Copy URL" button copies a URL that records the current rhythm pattern and settings to your clipboard. Open that URL next time to load the page with the same settings you had when you pressed the button.
[How to Read the Notation]
• Notes with stems pointing up are played with the hands; notes with stems pointing down are played with the feet.
• The "×" above the staff is the hi-hat (right hand), and the note in the middle of the staff is the snare drum (left hand).
• The note near the bottom of the staff is the bass drum (right foot), and the "×" below the staff is the hi-hat pedal (left foot).
• Red notes show the part you are changing in Pattern Practice.
• During playback, the beat being played is highlighted.
[Keyboard Shortcuts]
• The S key: Play / stop
• The N key: Go to the next pattern
• The B key: Go back to the previous pattern
• The A key: Turn auto-advance on / off
• The C key: Copy a URL of the current settings to the clipboard
• The F key: Enlarge / shrink the display
• The T key: Tap tempo
• The X key: Post on X (formerly Twitter)
• The ← key: Decrease BPM by 1
• The → key: Increase BPM by 1
• Shift + ←: Decrease BPM by 5
• Shift + →: Increase BPM by 5
• Ctrl + ←: Decrease BPM by 10
• Ctrl + →: Increase BPM by 10
[Notes]
• The order of the pattern list (①–⑯, etc.) follows the chart in the article below.
• The idea of thinking about rhythm in "groups" is explained in detail in this article on a mathematical approach to rhythm (in Japanese).
• For building rhythm patterns from the snare, the timekeeping pattern, and the kick, see this article on how to create rhythm patterns (in Japanese).
[If you hear no sound…]
• Check your device's volume settings and mute settings.
• Try pressing the play / stop button a few times.
• Check that the sound is not muted in Sound Settings on screen.
• Check that the on-screen "Volume" slider is not set to 0.
• Try reloading the page.
• If you still hear no sound after trying the above, we'd appreciate it if you'd let us know via Contact.
BPM means beats per minute. A higher number means a faster tempo.
Choose a rhythm
Tap a position in the score to choose the rhythm for that beat.
Choose a rhythm
Changing the subdivision also converts the other parts on this beat. Changes apply when you choose a pattern.
● Play ○ Rest — Each position runs left to right within one beat.
Edit individual hits
Pattern Practice
Change just one part step by step to practice limb combinations. The red notes in the notation show the part you are changing now.
Build a Rhythm
Notes
Sound Settings
Save Current Settings
[What You Can Do Here]
• Split a drum rhythm pattern into four parts — right hand, left hand, right foot, and left foot — and play it back while reading the notation.
• Think of each beat as a "group of 4" (four sixteenth notes) or a "group of 3" (an eighth-note triplet), and build rhythms by choosing which notes in the group to play.
• Each note in a group is either played (●) or not played (○), so a group of 4 has 16 patterns and a group of 3 has 8 patterns.
• For example, you can keep both hands on an eighth-note beat and cycle only the right foot through all 16 patterns.
[How to Use]
・Tap a position in the score to choose a rhythm for that beat and part. Tapping the foot area selects the right foot; select the left foot in the panel. Switch between groups of four (sixteenths) and three (triplets), then select a notation preview to apply it. Changing the subdivision converts all parts on that beat. Auto-advance pauses on the displayed pattern while you edit.
• Choose a basic beat or a practice menu from Choose a Rhythm. Trying a few is the quickest way to get started.
• In Build a Rhythm, pick "(1) Snare", "(2) Timekeeping", and "(3) Kick" to assemble a rhythm pattern.
• Tap / click the ●○ in the grid below the notation to turn each note on or off.
• Use the "16ths" / "Triplet" buttons in the grid to choose whether that beat is divided into sixteenth notes (group of 4) or a triplet (group of 3).
• In Pattern Practice, choose the part and the beats to change, then tap / click a pattern in the list to switch to it.
• Turn on "Auto-advance to the next pattern" and press play to move to the next pattern every few measures. The notation of the upcoming pattern is shown in advance.
• Use the speaker icons in Sound Settings to mute each part. Mute a part and play it yourself for practice.
• Pattern edits, sound changes, and BPM changes take effect instantly, even during playback.
• Pressing the "Copy URL" button copies a URL that records the current rhythm pattern and settings to your clipboard. Open that URL next time to load the page with the same settings you had when you pressed the button.
[How to Read the Notation]
• Notes with stems pointing up are played with the hands; notes with stems pointing down are played with the feet.
• The "×" above the staff is the hi-hat (right hand), and the note in the middle of the staff is the snare drum (left hand).
• The note near the bottom of the staff is the bass drum (right foot), and the "×" below the staff is the hi-hat pedal (left foot).
• Red notes show the part you are changing in Pattern Practice.
• During playback, the beat being played is highlighted.
[Keyboard Shortcuts]
• The S key: Play / stop
• The N key: Go to the next pattern
• The B key: Go back to the previous pattern
• The A key: Turn auto-advance on / off
• The C key: Copy a URL of the current settings to the clipboard
• The F key: Enlarge / shrink the display
• The T key: Tap tempo
• The X key: Post on X (formerly Twitter)
• The ← key: Decrease BPM by 1
• The → key: Increase BPM by 1
• Shift + ←: Decrease BPM by 5
• Shift + →: Increase BPM by 5
• Ctrl + ←: Decrease BPM by 10
• Ctrl + →: Increase BPM by 10
[Notes]
• The order of the pattern list (①–⑯, etc.) follows the chart in the article below.
• The idea of thinking about rhythm in "groups" is explained in detail in this article on a mathematical approach to rhythm (in Japanese).
• For building rhythm patterns from the snare, the timekeeping pattern, and the kick, see this article on how to create rhythm patterns (in Japanese).
[If you hear no sound…]
• Check your device's volume settings and mute settings.
• Try pressing the play / stop button a few times.
• Check that the sound is not muted in Sound Settings on screen.
• Check that the on-screen "Volume" slider is not set to 0.
• Try reloading the page.
• If you still hear no sound after trying the above, we'd appreciate it if you'd let us know via Contact.
