Hands-free practice
Keep the instrument in your hands.
Start a groove, work through a riff, and change tempo or feel without breaking the repetition to operate a backing-track app.
Your starting command
Free browser backing band. Open now.
A backing band you can control without putting down your instrument.
A free browser backing band for metal guitar practice and other styles. Start drums, bass and rhythm accompaniment, then shape tempo, key and feel with on-screen controls, text or keyboard. Voice and compatible MIDI controllers are optional.
Featured on Rekkerd.org (opens in a new tab)
Coming from a video? Find its backing setup
- 1Try a complete change in one command:“tempo 110 and swing 50% and key D”
- 2Runs in a modern browser with no download or account required.
- 3Switch grooves, keys, and feels without stopping the music.
- 4Save scenes in this browser and send live notes through WebMIDI.
Control preview
TransportTempo 110 • Swing 50%
Hold to Speak
tempo 110 and swing 50% and key D
Try this setup in the appOpens an editable command. Choose Run to apply it.
Drums • standard
Bass • On
Comping • Power chords
Scenes • 10 local
MIDI Schedule
Kick
0ms
Snare
120ms
Bass
240ms
Comp
360ms
Current settings
Audio
Ready
Key
D
Change at
Next bar
Seen a Mock Band clip?
Try the backing setup. Bring your own riff.
Pick the style from the video. In the app, choose Load practice setup, then Start playback. Switch between four sections or make it your own. No account needed; your saved scenes stay untouched.
Galloping metal
The Trooper practice
160 BPM · E natural minor · 4/4
A tight gallop, an open refrain, a lighter bridge, then a ride-bell finale with tom fills.
Try the gallopDoom
Slow weight
60 BPM · E natural minor · 4/4
Give your riff room: slow drums, ringing chords, a quiet bridge and a heavier return.
Try doomDeath metal
Blast drive
180 BPM · E Phrygian · 4/4
Move between a traditional blast, a half-time breakdown and a quieter bridge.
Try death metalProgressive metal
Seven drive
120 BPM · E Dorian · 7/8 (2+2+3)
Find the 2+2+3 pulse, open up the refrain, then bring back the ride bell and tom fills.
Try prog
Generated backing for practice, not song transcriptions or original recordings. Nothing plays until you press Start.
A five-minute first session
Try it during one real practice break.
You do not need an account or a finished song. Open the band, press Start, and use whichever control method keeps you focused on playing.
- 01
Get a groove running
Choose a preset or set the tempo, meter, key, and feel. Drums, bass, and comping are generated live in your browser.
- 02
Change it without stopping
Use the visible controls or type a command. In supported browsers, hold to speak; with compatible hardware, map a MIDI controller.
- 03
Keep the setup
Save the arrangement to one of ten local scene slots, then export the scene file when you want a backup or another browser.
Play one riff, change the band once, and see if you stay in flow.
Chrome or Edge is recommended for voice and MIDI. The microphone is optional, and the core app does not require signup.
Where it fits
Built for the moments when stopping breaks the idea.
Mock Band is not trying to replace a DAW. It gives a musician a live rhythm section that stays close enough to steer while both hands are busy playing.
Rehearsal accompaniment
Move between sections on your cue.
Save local scenes for contrasting song sections, then recall them from the interface, keyboard, voice, or a mapped MIDI controller.
Your starting command
Riff sketchpad
Hear an idea against a rhythm section.
Try a riff with generated drums, bass, and comping, then reshape the key, meter, tempo, and arrangement while the idea is still fresh.
Your starting command
Why Mock Band
More band than a click. Less setup than a DAW.
Mock Band sits between simple practice utilities and a full music production workflow. It does not replace either; it gets a steerable rhythm section running while the idea still has momentum.
More company than a click
A rhythm section, not just a pulse.
Practice against generated drums, bass, and comping that share the same tempo, key, meter, and feel.
More steerable than a fixed track
Change direction while you play.
Move the tempo, key, groove, or instruments without hunting for another recording or interrupting the repetition.
Less setup than a DAW
Open a browser and start the band.
There is no download, project template, or account. Save useful setups as local scenes when you want to return to them.
See Mock Band in action
These are the controls you will use in the app: build the groove, shape the band, inspect the schedule, and review each command.
Swipe through four views. Tap any screenshot to inspect it.
Keep the practice session moving
Shape the backing band without stopping to find another track or edit a timeline. Start with the controls that fit your setup today.
Commands
Text commands + voice
Run focused commands like “tempo 110,” “key Dm,” or “swing 25.” Hold to speak where the browser supports it.
Controls
Visible controls + hotkeys
Use the on-screen controls or keyboard shortcuts while the groove keeps playing.
Timing
Beat- or bar-timed changes
Choose Beat or Bar before instrument and scene changes so transitions land predictably.
Audio
A live browser band
Drums, bass, and comping run together in the browser with no backing tracks to download.
Scenes
Ten local setup slots
Save setups in this browser, then export or import a scene file when you need a copy.
MIDI output
Live notes for other gear
Send the generated schedule to compatible MIDI software or hardware. MIDI-file export is not included.
What works today
The current product is free to try. Voice and MIDI capabilities depend on browser and device support; Chrome and Edge are the safest choices for the complete experience.
Capability
Status
Notes
Audio engine
Status: Built in
Details: Drums, bass, and comping run in the browser
Controls
Status: Built in
Details: Text, keyboard, and supported voice commands
MIDI controllers
Status: Supported
Details: WebMIDI input and output in compatible browsers
Saved scenes
Status: Local
Details: Stored in this browser; export and import scene JSON
Installable app
Status: Supported
Details: PWA installation where the browser offers it
Before you start
The practical limits are part of the product. Here is what Mock Band does—and does not do—today.
Do I need a microphone or MIDI controller?
No. The core performance controls are available on screen and through text. Voice, keyboard shortcuts, and compatible MIDI hardware are optional ways to control the same band.
Does Mock Band upload my sessions?
No. Scenes and preferences stay in this browser, and there is no user account or cloud scene database. You can export scene JSON when you want a backup or need to move a setup to another browser.
Can it export audio or MIDI files?
Not yet. Mock Band generates live audio in the browser and can send live notes to a compatible MIDI destination, but recording and MIDI-file export are not implemented.
Which browser should I use?
A current version of Chrome or Edge is the safest choice for the full experience. The audio engine requires Web Audio and AudioWorklet; voice recognition and WebMIDI support vary by browser, operating system, permissions, and hardware.
Is Mock Band free?
It is currently a free experiment with no paid tier or account requirement. The optional email signup is only for product updates and does not unlock features.
Want to hear what changes?
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