CC Automation Grids
Paint automation shapes directly on step tracks, map MIDI parameters, and evaluate dynamic equations (Sine, Saw, Random) to modulate hardware.
Free Online MIDI Step Sequencer & Studio.
A free in-browser step sequencer software and online music sequencer for hardware synths. Draw CC automation, sequence polyphonic chords, and route modular patches directly in your browser.
112 BPM
Kick
Snare
Hat
Bass
Tap the steps to write your own pattern. The full studio sends it to your synths over MIDI.
Supported Gear
Interactive MIDI CC Maps & Editors. Open a synth, see every mapped parameter, and tweak it from your browser.
48
instruments mapped from 14 brands, including synths, drum machines and effect pedals.
Online Sequencer Features
Step sequencer software built for hardware control.
Melodic Chords
Quickly preview chord degrees, invert shapes, and paint complex structures in polyphonic tracks.
Cloud Sync
Sync local projects, authenticate securely, and access your sequencer settings and backups globally.
Creative Copy-Transforms
Clone sequencer patterns dynamically using diatonic transposition, retrograde reversal, step-gating, or analog-inspired Drunk drift.
From browser to hardware in minutes
Web MIDI works in Chrome and Edge on desktop. Open the studio and your synths show up as outputs.
Plug in your gear
Connect a synth over USB or a MIDI interface and pick it as the output. Nothing to download.
Sequence on the grid
Draw notes, chords and drum hits step by step, then queue patterns to switch them live.
Automate every knob
Paint CC lanes for filter, resonance and effects, and send them to your hardware in real time.
ACADEMY
Learn music, step by step.
Interactive browser-based lessons built around the sequencer. Follow slide-by-slide guides for rhythms, basslines, and synthesis. No DAW needed.
rhythmbeginner
The Backbeat Groove
Master the foundational kick/snare pattern used in virtually every genre of modern music.
Premium3 slides
melodyintermediate
Crafting an Acid Bassline
Build the iconic squelching 303-style bassline using step sequencing and filter automation.
Premium3 slides
rhythmbeginner
Classic House Groove
Recreate the timeless four-on-the-floor house beat with open hi-hats and off-beat percussion.
Community2 slides
Community lessons are created by users like you
Create your own lessonLatest Updates
News & Release Notes
Features
From Berlin School to Trap: Introducing Step Ratchets & Rolls
From Berlin School to Trap: Introducing Step Ratchets & Rolls If you have ever tried programming a 32nd-note snare roll, a frantic trap hi-hat burst, or a c...
Features
Stay in the Flow: Custom Pattern Renaming in closeby.1
Stay in the Flow: Custom Pattern Renaming in closeby.1 You're deep in the middle of a live jam or arranging a 16-track hardware session. Your bass synth tra...
By closeby.1 TeamRead update
Features
Beyond Synths: How to Sequence & Automate Effect Pedals with MIDI in closeby.1
Beyond Synths: How to Sequence & Automate Effect Pedals with MIDI in closeby.1 Musicians spend hours dialing in lush stereo reverbs, surgical delays, and mu...
By closeby.1 TeamRead update
Start sequencing your synths
Free, runs in your browser, nothing to install.