Slab 0.0.7

Time: tempo, sections, groove

• Tempo changes. Right-click the ruler: Tempo change here, Ramp to
  next tempo, Remove tempo change; drag a change's value on the ruler.
  Steps and linear ramps, exact to the sample; editing the tempo while
  playing keeps the playhead on its beat. The BPM field sets the tempo
  where the playhead is.
• Sections and locators. A lane above the ruler: sections (INTRO,
  VERSE, …) back to back, locators (named flags) and the song's END.
  Double-click to add a section, drag to move, right-click for the rest;
  ⌘← / ⌘→ jump between them. A section's dialog sets its name, color,
  tempo, meter and groove, written into the maps at its start. Sections
  sit on bars; with ⌥, anywhere on the grid (a pickup).
• Arranging by section. Duplicate section, Move section
  earlier/later, Delete section and its content: clips, automation,
  tempo and meter changes and locators move with it, cut cleanly at its
  edges.
• Groove. Swing and feel applied as notes play, never written into
  them: MPC swings, triplets, samba, laid back, loose, and grooves that
  follow the meter's groups (aksak). The song's groove (ruler menu), a
  section's, or a track's own with AMOUNT and SHIFT (piano roll header).
  Extract groove from a clip, Commit groove into the notes. Replaces
  the piano roll's SWING.
• Polymeter and polytempo. A track can have its own meter and a tempo
  ratio (3:2, 4:3, 5:4, …) from its right-click menu; its clips run in
  its own beats.

Bounce, freeze, export

• Bounce a selection of clips to a new track, after the instrument,
  the effects, the fader or with its sends; the originals mute and can be
  thawed back, and a bounce shows STALE when what it was made from
  changed.
• Freeze a track (right-click its name): its audio plays instead of
  its machines to save CPU; Unfreeze, Freeze again, Flatten to
  audio. FROZEN / STALE on its header.
• The Export sheet (⌘R): presets (MASTER, STREAMING, CD, STEMS FOR
  MIXING, SECTIONS, LOOP, PREVIEW, BROADCAST, ARCHIVE, and your own),
  tabs for tracks, format, level and files. Stems from one render, chosen
  per track; WAV, AIFF, FLAC (Slab's own encoder), ALAC, AAC; 44.1–96
  kHz; mono or stereo; dither; normalize to a loudness or peak with a
  report card; name templates with folders; title/artist/album/year tags
  in every format; a file per section; WAV cue points from sections and
  locators, and loop tempo for apps that sync loops.
• Clip mute.
• Command line: --stems, --sections, --normalize, --rate,
  --mono, --flac-level, tags and more (docs/19).

slabkit

• song.tempo(), section(groove=), Song(groove=), track.groove(),
  track.time(); songs write their sections and END.

---

Apple Silicon, macOS 13 or later. Built from v0.0.7, which is its complete source (GPL-3.0-or-later, see COPYING.md).

Install:

curl -fsSL https://github.com/nooga/slab/releases/latest/download/install.sh | bash

Or with Homebrew: brew install --cask nooga/tap/slab

Or open the DMG and drag Slab to Applications. It is not notarized, so the first launch needs System Settings > Privacy & Security > Open Anyway.