OP Studio

The problem

The OP-1 Field is
a perfect instrument.
Its recording workflow
is not.

OP Studio fills the gaps: quantize live recordings, browse 112 genre-specific patterns, build step sequences, and compose multi-track grooves — then send everything back to the OP-1 in real time.

01 / Quantizer

Record.
Snap.
Send.

Record notes live from your OP-1 Field, then snap them to a grid with surgical precision.

Quantization strength 0–100%
Swing amount 50–75%
Threshold: notes near grid stay untouched
Piano roll editor
Single shot or loop
MIDI clock sync from OP-1

Quantizer — piano roll, grid quantize, strength / threshold / swing

Arpeggiator — pattern library with genre groups and dot-grid previews

02 / Patterns

112 patterns.
23 genres.
One tap to send.

Curated drum patterns and melodic sequences across every major genre.

Four on the Floor Trap Bossa Nova Techno Drum & Bass Afrobeats TB-303 Acid Euclidean Waltz Funk Reggaeton Lo-Fi Hip Hop

Dot-grid preview for every pattern
Per-step velocity, note, ratchet
Ratchet: up to 4 subdivisions
MIDI file export

03 / Sequencer

Step by step.

Build 16-step sequences using your OP-1 keyboard in learn mode — play a note and the app auto-advances.

Chord-aware: strum multiple notes within 50 ms and they land as a chord on one step.

OP-1 learn mode
Chord detection (50ms window)
Variable timing for free rhythms
MIDI file export

Sequencer — 16-step with OP-1 learn mode and history

Groove — 8-track polyrhythmic sequencer with accent and swing

04 / Groove

Multi-track.
Polyrhythmic.
Precise.

Compose multi-track arrangements with up to 8 tracks. Polyrhythmic step counts from 4 to 64. Per-track rate scaling. Accent track. Global swing.

Save your groove directly to the pattern library.

8 tracks (kick, snare, hh, crash, pad, bass…)
Step count: 4 / 6 / 8 / 12 / 16 / 24 / 32 / 64
Rate: 0.5× to 4× per track
Accent track
Multi-track MIDI export

Everything else.

Perform mode

Hold a key.
Transpose in real time.

In any module, hold any key on your OP-1 keyboard. The app transposes your sequence chromatically. Live. Zero latency.

Tempo

MIDI clock sync

Locks to OP-1's MIDI Clock automatically. Switch to manual BPM any time.

Export

MIDI file export

Export any pattern, sequence, or groove as a standard .mid file.

Connection

USB-C

Plug in. No driver. No setup. USB Class-Compliant MIDI.

Platform

iPhone & iPad

iOS 17+. Works on iPhone. Designed for iPad.

Patterns

112

Genre-specific patterns across 23 categories.

Philosophy

Designed to match
the hardware.

Aluminum silver background. SF Mono labels. Uppercase everything.

OP Studio looks and feels like a natural extension of the OP-1 Field — not a generic iOS app bolted on from the side.

The missing tools for OP-1 Field.

The OP-1 Field is a perfect instrument. Its recording workflow is not.

Record.Snap.Send.

112 patterns.23 genres.One tap to send.