95 LoFI: Generative Beat Maker

95 LoFi writes complete tracks. Press write and you get 52 bars - an intro,
three main sections, two lifts, a breakdown and an outro - played by a
dusty-keys synthesizer and a soft drum kit, then recorded onto tape. Keys, bass,
a melody line, a pad, the kit, and the record surface underneath it all.

Nothing is sampled. There are no audio files in this app at all - the keys, the
kit and the vinyl crackle are all synthesised as they play.

The music comes from chaos maths. Three Lorenz attractors shape the melody, the
rhythm and the mood. Two logistic maps run underneath the drums and the bass so
they wander independently of each other: turn the logistic control down and the
hats repeat every bar, turn it up and they never do.

Chaos on its own is noise, so a small model filters it. It is rewarded for
consonant intervals and rehearses over the changes before writing. The CHAOS /
TASTE slider decides how much say each one gets.

Nine styles, and they are properly different. Chillhop and Jazzhop sit where you
expect. Boom Bap hits harder and drier. Study Beats takes almost everything away.
Drift slows to a crawl. Lo-Fi House pushes past 106. Celtic and Medieval are not
jokes - modal progressions, different cadences, nothing else on the shelf sounds
like them.

The tape deck is the other half of the sound: a wow-and-flutter transport that
never quite runs true, vinyl crackle with real pops and decaying tails, hiss, bit
crush and saturation. The crackle is seeded, so the scratch lands in the same
place on every play and every export.

Every track is built from its seed. Write the seed down and you can have that
exact track again, note for note, whenever you want it. A seed from the browser
version rebuilds the same track here.

You can play over it, too. The pads are the notes of the track's key rather than
a piano keyboard, so nothing you touch is wrong, and the sixteen-step lane runs
in time with the track. Both play any part you like - keys, bass, melody or
pad - through that part's sound. Choose which sections the lane plays in - just
the breakdown, say - and preview it without starting the track.

Turn on RADIO and it keeps playing, picking a new key, mode, style, sound kit
and tempo for each track.

You also get:

• 9 styles, 8 modes, 12 keys, tempo, swing, density and humanise
• A three-layer voice: an FM tine, one or two detuned bodies, and a sub
• 16 presets and 9 sound kits, from Tape Deck to Music Box, plus random patch
• Six-part mixer, chorus, a long dark reverb, synced delay and sidechain pump
• A tape deck: tone, wow and flutter, crackle, hiss, bit crush and drive
• Export any track as a MIDI file, free
• Render a WAV mix, or stems - one WAV per part plus the record surface on its
own, in a zip
• UI scale, for tablets
• Live spectrum and waveform, and the chaos engine drawn as it runs

Plug in a USB MIDI keyboard and it plays whichever part you have selected.
Every part sends on its own MIDI channel and every drum has a note and a
channel of its own, so the app can drive external synths and drum machines.

The app is free: every track, every sound and MIDI export are yours without
paying. Rendering to audio - the WAV mix and the stems - is a one-time
purchase.

No account, no ads, no subscription. Works offline.

Recent changes:
Added Track Preset section.