Stage & Rehearsal Portal for Working Bands

Offline rhythm charts, practice audio, and stand-to-stand sync built for real stage light.

When you are playing an instrument and singing harmony, a tablet on a music stand is not read like a page of prose. You parse it in 200-millisecond glances from three feet away. Bobolink turns a band's songbook into high-contrast 4-bar Nashville rhythm charts and lyric sheets that open offline every time and keep every stand together.

100% Offline at Showtime · Zero account gates
Nashville 4-Bar Grid · Realtime key & Capo transpose
Audio-Locked Follower · Ticks with rehearsal takes
Morning Field
Key: G 4/4 · Folk Walk 92 BPM
⏱ Following Rehearsal Take · Bar 2 Sync: 3 Stands Linked
Verse 1 · 8 Bars Acoustic intro rings into vocal
G 1
Cadd9 2
Em7 3
D 4
Early light across the pasture, mist still rising from the creek 2nd voice enters on bar 3

Built around how a band actually rehearses and plays

Every tool in Bobolink serves the path from an early voice memo to a settled stage arrangement, while keeping the stage view calm and uncluttered when it is time to perform.

On the Stand

4-Bar Rhythm Grids & Lyric Sheets

Switch instantaneously between full 4-bar chord grids, compact single-screen Dense views, typeset lyric and harmony sheets, and a 1-tap Showtime View. Transpose into any key or Nashville numbers on the spot.

In Rehearsal

Practice Audio that Follows the Take

Play band rehearsal recordings right inside the chart with draggable A/B loops, saved loop chips, and pitch-preserving slow-down from 50% to 100%. An on-device beat and harmony map keeps the bar highlight and metronome locked to the recording.

Writing & Arranging

Song Sketchbook & Chart Editor

Capture song ideas or in-chart rehearsal takes with crash-safe 1-second timeslices in local storage. Edit bars directly on your tablet, import ChordPro, MusicXML, iReal Pro, or PDFs, or draft a bar-locked chart from a voice memo.

Across the Stage

Stage Link Stand-to-Stand Sync

Link tablets across the stage over local Wi-Fi or a pocket stage router. Calling an audible song change, transposing a key, or starting a count-in keeps every linked stand on the same measure, even if venue internet drops.

Band Coordination

Roles, Setlists & Shared Takes

Coordinate setlists, chart suggestions, and reference recordings across band members without running a central server. When a new chart is published to the band, its practice take and beat map travel right along with it.

Long-Term Ownership

Open Formats & Google Sheet Sync

Author entirely inside the portal or pair with your band's own Google Sheet and Google Drive folder. Export deterministic .bchart and .bpack files anytime so your band always owns its work.

Engineered for stand distance and stage lighting

Paper sheet music and general-purpose document apps assume continuous reading at arm's length. Bobolink is designed around human visual perception at 24 to 36 inches under dark room wash or outdoor glare.

Solar Gold on Elevated Obsidian

  • Peak Photopic Sensitivity: Human retinal cones peak near 555 nm. Warm amber-gold chords (#facc15) deliver crisp perceived brightness without forcing tablet backlights to blinding levels on a dark stage.
  • Halation Prevention: Pure white text on pitch-black backgrounds causes astigmatic halation in dilated pupils, blurring chord extensions like maj7, m7b5, and slash bass notes. Elevated obsidian surfaces keep letterforms sharp.
  • High-Contrast Daylight Mode: One tap switches the entire portal to a daytime outdoor palette for afternoon festival sets.

Uncompromising Showtime Rules

  • Local-First Autonomy: Charts, setlists, and sketches live in your device's IndexedDB and Service Worker cache. A chart on your tablet never depends on a network connection, an account login, or an external server to open.
  • Deterministic on Stage: Optional AI assistance is strictly for off-stage chart importing and drafting into human Bar Review. Everything that runs during rehearsal playback and live performance is deterministic and offline-safe.
  • Isolated Per Band: Each band runs its own configuration, repertoire, and private Google Drive audio boundary while sharing the Bobolink engine.