Tracks & Instruments

The Rack is the vertical panel on the left edge of the screen that manages all instruments in your score.

Track Types

Reflow has three track types:

• Tablature — for guitar, bass, banjo, ukulele, and other fretted instruments. Shows fret numbers on string lines.
• Drums — percussion staff with drum kit mapping. Uses specialized noteheads for different drums and cymbals.
• Standard — traditional staff notation for piano, violin, flute, vocals, and other instruments. Supports one or two staves (e.g., grand staff for piano).

The Rack

The rack has two display modes:

• Compact — track icons with solo/mute buttons. Click a track to select it.
• Expanded — full track names, volume/pan sliders, instrument selector, and tuning button. Click the rack header to toggle.

Adding Tracks

Click the + button in the rack header to add a new track. Choose the track type (tablature, drums, or standard) and instrument from the menu.

Reordering and Deleting

In expanded mode, click Edit in the rack header to reorder or delete tracks.

Multi-Track View

All tracks are always visible in the score. Click on any staff to make that track active for editing. Use the rack or arranger to solo or mute individual tracks during playback.

MIDI Instruments

Each track can be assigned a different MIDI instrument for playback, giving you access to the full General MIDI set — 128 instruments from acoustic piano to synth pads. Change the instrument in expanded rack mode.

Audio Units & Studio Rack

On Mac, enable the Studio Rack from the rack header to load your own Audio Unit plugins. The Studio Rack replaces the built-in SoundFont engine with a full AU hosting environment.

Per-Track Instruments

Each track can load one AUv3 instrument — amp simulators, synth plugins, or sampled instruments. Compatible with Neural DSP, TONEX, Kontakt, Superior Drummer, Surge XT, and any AU-compatible plugin on your Mac.

Per-Track Effects

Each track has its own effect chain. Add as many AU effects as you need — EQ, compression, reverb, delay, distortion. Each effect can be bypassed individually. Parameters update in real time during playback.

Send Buses

4 auxiliary send buses are available for shared effects like reverb and delay. Each track has per-bus send levels. Each bus has its own gain, mute, and effect chain.

Master Chain

The master section has its own gain control and effect chain for final processing — master EQ, limiting, or any AU effect.

Metering

Real-time stereo peak meters on every track, every send bus, and the master output during playback.

Fallback

When the Studio Rack is disabled, playback falls back to the built-in TinySoundFont engine with General MIDI sounds. Your AU settings are preserved and restored when you re-enable the Studio Rack.