RockBlocks

Drag rhythmic values into up to 4 beat blocks per line to build a drum groove, or click a tile then click a block to place it — handy on a trackpad.

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RockBlocks: a free online drum machine anyone can play

RockBlocks is a free, browser-based drum machine and beat maker. You build a beat by dragging rhythmic values into a grid of beat blocks — one row per drum piece — in any time signature, regular or odd. A one-click generator also spins up fresh, original beats in regular or odd meter, and can add a matching bass line that follows the groove. It runs entirely in a web browser with no login, download, or install, and it is designed so anyone can use it: a young child tapping out a first rhythm, or a working musician sketching a drum part in 7/8.

It is a reimagined drum machine: simple enough that a young child can drop tiles into the grid and hear a real beat on the first try, and deep enough that a working musician can sketch a groove in 5/4 or 7/8. In a few clicks you can generate a fresh, unique beat in any meter, add a bass line that follows the kick and snare, and export the whole thing as MP3 or MIDI. No account, no download — open the page and start.

The drum machine is right above — start dropping tiles into the grid. More to explore: Drum School (100 free lessons), famous song drum beats, drum beats for Suno & AI music, turning a beat into a TikTok/Reels video, and about RockBlocks.

How to make a drum beat

  1. 1.Pick a drum row. Each row is one drum piece — bass drum, snare, hi-hat, and more. Start with the bass drum row.
  2. 2.Drop rhythm tiles into the beat blocks. Drag a rhythmic value (a quarter note, two eighths, a triplet) into a beat block, or tap a tile then tap a block. Each block is one beat.
  3. 3.Add the snare and hi-hat. Fill the other rows the same way. A basic rock beat is bass drum on 1 and 3, snare on 2 and 4, steady hi-hats throughout.
  4. 4.Set the time signature and tempo. Add or remove beat blocks to change the bar length — try 5 or 7 for an odd time signature — and set the BPM in the transport bar.
  5. 5.Generate a beat or a bass line in a few clicks (optional). Use the Inspiration generator for a fresh, unique beat — in any meter — or a variation, fill, or solo from what you have. Open Bassline to generate a bass part that follows your kick and snare; pick a key and scale, and change key, scale, octave, or how busy it is without regenerating.
  6. 6.Play, save, or share it. Press play to hear the loop. Save it to your own page, arrange several beats into a song with Stacks, or export an MP3 or MIDI file — with the bass line or drums only.

What you can do with RockBlocks

  • •Drag rhythmic values (quarter notes, eighths, sixteenths, triplets and more) into a grid of beat blocks — one row per drum piece
  • •Build beats in regular or odd time signatures (3/4, 5/4, 7/8 and beyond), up to 16 beats per bar
  • •Play through several classic drum-machine kits (TR-808, LinnDrum LM-2, Roland CR-8000, MFB-512, Casio RZ-1) plus an acoustic kit and a synthesized novelty kit
  • •Two ways to build a beat: RockBlocks' own beat-block grid — one block per beat, drag in a rhythm tile — or a Classic view, a familiar 16-step drum-machine sequencer grid for the exact same pattern; switch anytime, and an edit in either view shows up instantly in the other
  • •Inspiration generator: in a few clicks, spin up a fresh, unique beat in a regular or odd time signature — or a groove variation, fill, or human-playable drum solo from an existing beat, with a complexity dial
  • •Generated bass lines: add a bass part that follows your beat's kick and snare — choose the key, scale (major, minor, modes, pentatonic, blues, jazz and more), octave, how busy the walking line is, and one of five synth bass tones (fingered, pick, upright/double bass, synth sub, muted dub); change key, scale, octave, and volume on the fly or re-roll for a new line
  • •TextyBeat: paste a sentence and get a drum groove generated from its word rhythm, deterministically
  • •Stacks: arrange repeats of your beats into a longer, full-song arrangement
  • •Save a beat to a personal no-login page at rockblocks.app/YourName, or share any pattern by link
  • •Export a beat — with its generated bass line, or drums only — as an MP3 or a MIDI file
  • •Use your beats to power AI music: export an MP3 to seed a track in Suno, Udio, or Riffusion, or export MIDI to build the drums (and bass) in a DAW
  • •Fractal Art: turn a beat into generative line art — one continuous, colored layer per drum piece, drawing itself in time with the music — in a dark or light background and five visual styles (Classic, Bloom, Vignette, Vivid, Prism)
  • •Export a share-ready video of a beat's Fractal Art — vertical (9:16) for TikTok and Instagram Reels, or square (1:1) — with the beat's own sheet music and a live playhead overlaid, an optional RockBlocks logo, and a 7–15 second clip length
  • •Drum School: 100 free stepwise lessons that build a full groove one idea at a time
  • •RockBlocks Math: a free, grade-aligned math curriculum where each lesson pairs a math concept with a drum pattern built to correlate with it

Who it's for

  • Kids and first-time beatmakers — tiles snap into the grid, so a real beat happens on the very first try.
  • Drummers and producers — sketch grooves fast in any meter, generate variations, fills, and playable solos, drop a generated bass line underneath, then export MIDI into a DAW.
  • Songwriters— turn a lyric into a starting groove with TextyBeat, or drop in a famous song's drum part as a template.
  • Music teachers — a free, no-login step sequencer for showing how a groove is built one piece at a time, with a 100-lesson Drum School.
  • Content creators — turn a beat into generative Fractal Art and export a share-ready video, sized for TikTok and Instagram Reels, with no video editor.

RockBlocks is becoming a physical instrument

The web app is the first form of RockBlocks. A physical RockBlocks — a hands-on drum machine you can hold, built for toy shops and music stores — is in the works. Same idea: a drum machine anyone can play. Read more on the About page.

Frequently asked questions

What is RockBlocks?
RockBlocks is a free online drum machine and beat maker that runs in your web browser. You build a drum beat by dragging rhythmic values into a grid of beat blocks, one row per drum piece, then press play. There is no login, download, or install.
Is RockBlocks free?
Yes. Every feature — building beats, generating beats and bass lines, all the drum kits, TextyBeat, Stacks song arrangement, MP3 and MIDI export, saving to your own page, and the 100 Drum School lessons — is free, with no account required.
Do I need to download or install anything?
No. RockBlocks runs entirely in a modern web browser on a computer, tablet, or phone. Nothing is installed.
Can children use RockBlocks?
Yes — that is a core part of the design. Placing tiles into beat blocks is simple enough for a young child to make a real beat on their first try, while still giving musicians odd time signatures, triplets, ghost notes, and accents.
Can I make beats in odd time signatures?
Yes. You can set any bar length from 1 to 16 beats, so 3/4, 5/4, 7/8, and less common meters all work. This is one of the main reasons musicians use RockBlocks to sketch drum parts. The Inspiration generator and generated bass lines work in odd meters too, so you can spin up a unique 5/4 or 7/8 groove with a matching bass part in a few clicks.
How do I make a drum beat?
Drag a rhythmic value into a beat block on a drum row, or tap a tile then tap a block. Put the bass drum on beats 1 and 3, the snare on 2 and 4, and hi-hats on every beat for a basic rock groove, then press play.
What drum kits does RockBlocks have?
Classic drum-machine sample sets including the Roland TR-808, LinnDrum LM-2, Roland CR-8000, MFB-512, and Casio RZ-1, plus an acoustic kit and a synthesized novelty kit.
Can RockBlocks turn text into a beat?
Yes. The TextyBeat tool takes a sentence and generates a drum groove from its word and syllable rhythm. The same text always produces the same beat.
Can RockBlocks generate a beat for me?
Yes. The Inspiration generator makes a fresh, original beat in a few clicks — in a regular or an odd time signature — and can also hand you a groove variation, a fill, or a human-playable drum solo based on a beat you already have, with a 1–10 complexity dial. Every generation is new; run it again for another.
Can RockBlocks add a bass line to my beat?
Yes. RockBlocks can generate a bass line that follows your beat's kick and snare. You choose the key, the scale (major, minor, modes, pentatonic, blues, jazz, and more), the octave, and how busy the walking line is, plus one of five synthesized bass tones: fingered electric, pick, upright/double bass, synth sub, or muted dub. Key, scale, octave, and volume can be changed on the fly without regenerating, and the bass line is included in the MP3 and MIDI export (or you can export the bass on its own).
Can I export or share my beat?
Yes. Export any beat — with its generated bass line, or drums only — as an MP3 or a MIDI file, save it to a personal page at rockblocks.app/YourName, or share a pattern with a link.
Can I make an 808 beat?
Yes. Choose the TR-808 kit and build a pattern the same way you would with any kit. RockBlocks also has LinnDrum LM-2, Roland CR-8000, MFB-512, and Casio RZ-1 sample sets, plus an acoustic kit.
Does RockBlocks work on an iPad or a phone?
Yes. It runs in the mobile browser on iPad, iPhone, and Android. Tap a rhythm tile, then tap a beat block to place it.
Can I use RockBlocks beats in my own music?
Yes. Beats you make are yours to use. Export them as an MP3 or a MIDI file and drop them into a track, a video, or a project.
Can I use RockBlocks beats with Suno or other AI music tools?
Yes. Export a beat as an MP3 and upload it as the audio input for Suno, Udio, or Riffusion so the generated song follows your drum pattern, or export MIDI to build the drums in a DAW first. Starting an AI song from a real drum groove gives it a rhythmic backbone a text prompt alone usually can't. See the AI music guide at rockblocks.app/ai-music.
Does RockBlocks have a classic step sequencer?
Yes. Switch to Classic view and every beat becomes a familiar 16-step on/off grid, one row per drum piece — the same pattern you can also edit as RockBlocks' own draggable rhythm-tile blocks. An edit in either view applies to the same beat instantly; nothing needs to be rebuilt.
How is RockBlocks different from a step sequencer?
A classic step sequencer gives you a fixed grid of on/off steps, and RockBlocks' Classic view is exactly that. Its own beat-block view goes further: one block per beat and a palette of rhythm values — quarter notes, triplets, sixteenth runs — that you drag in, so one beat can hold any rhythm and a bar can be any length for odd time signatures. Both views edit the same beat, so you can use whichever fits the moment.
Can RockBlocks turn my beat into a video?
Yes. Fractal Art turns a beat into generative line art — one flowing, colored layer per drum piece, drawing itself in time with the music — and you can export it as a short vertical or square video, with the beat's own sheet music and a live playhead overlaid, ready to post to TikTok, Instagram Reels, or anywhere else.
Can I make a TikTok or Instagram Reel from my beat?
Yes. Open Fractal Art, then Share Video, pick a vertical (9:16) or square (1:1) aspect ratio, a background and visual style, and a clip length from 7 to 15 seconds, then record. The export is a standard MP4 with your beat's audio, built to upload straight to TikTok or Instagram Reels, with an optional RockBlocks logo you can turn off.
Is there a physical RockBlocks?
A physical RockBlocks instrument for toy shops and music stores is planned. The web app is the same idea you can use today for free.