Drum Rhythm Pattern Trainer

1. Choose a rhythm: Pick a preset such as an eighth-note beat from "Choose a Rhythm".

2. Set the tempo and play: BPM means beats per minute. Higher numbers are faster. Use "−1", "+1", or type a number, then press ▶. Press it again to stop.

3. Try a change: In the Patterns tab, choose a part and beats, such as right hand on beats 1–4, then apply a rhythm to them together. To silence a hand or foot, tap its part name in the grid below.

• 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.

• Click or tap the score to play / stop. The next-pattern preview works the same way. When the score has keyboard focus, Enter or Space also toggles playback. Edit individual hits in the Notes tab, which opens by default, or choose the Patterns tab to change several beats together.

• Tap the heading with the ⇄ icon above the patterns to switch between groups of four (sixteenths, 16 patterns) and three (triplets, 8 patterns). Select a notation preview to apply it to every selected beat. Browsing the previews does not change the rhythm. Changing the subdivision also converts the other parts on those beats.

• 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 the Patterns tab, choose the part and the beats to change, then tap a notation preview to apply the same rhythm to those beats. Select all four beats for the whole measure, or only beats 1 and 3 for those two beats. On phones, each set of four options is arranged in one row below its heading.

• 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.

• On a phone, swipe the note grid sideways to edit later beats. Use the arrow on the right of the bottom control bar to expand or collapse it. Play / stop and the "−1" / "+1" tempo buttons remain available when it is collapsed. Hold either ±1 button to adjust continuously, with increasing speed. Release or move off the button to stop. Expanded controls place Tap tempo beside BPM, with the adjustment buttons and a full-width slider below.

• 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.

• Tap / click Right Hand, Left Hand, Right Foot, or Left Foot in the note grid to silence that part and hide its notes from the current and next scores. Tap again to unmute.

• A muted part has a crossed-out speaker and part name. Its hits stay in the grid and can still be edited. Unmuting restores its sound and notation using the current hits.

• For the right-hand hi-hat, tap each dot to cycle through Rest → C (closed) → O (open) → Rest. Two taps from a rest make an open hit. Only that hit changes: for example, open just the offbeat of beat 4.

• Each open hit has a ○ mark in the score, and the next closed hit cuts off its sound. Individual open and closed hits are preserved when muting and in shared URLs.

• Presets using ride or cowbell show the sound below the right hand; their dots toggle on/off. Choose a hi-hat preset, such as an eighth-note beat, to edit hi-hat openings.

• For example, mute the right foot and play the kick yourself along with the remaining parts. Adjust volume, click, and count-in in ⚙ Playback settings.

• In this score, notes with stems pointing up are for the hands; notes with stems pointing down are for the feet. Hand rests appear in the upper voice and foot rests in the lower voice.

• When both hands rest for a full measure, a whole-measure rest appears above. When both feet rest for a full measure, it appears below. This also applies when parts are muted: the remaining rest shows that those limbs are silent.

• When all parts are empty or muted, the score shows one whole-measure rest for the entire measure.

• 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). The left foot defaults to clave (◆). Presets can change its sound and notehead: × for hi-hat pedal, or a triangle for cowbell.

• Red notes show the part you are changing in the Patterns tab.

• During playback, the beat being played is highlighted.

• 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).

• Check your device's volume settings and mute settings.

• Try pressing the play / stop button a few times.

• Check for crossed-out part names in the note grid. Tap a muted part name to unmute it.

• Open ⚙ Playback settings and check that Volume 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.