User Guide

Click New practicefrom the library. You'll first choose which workflow fits the recording:

• Melody & solo notation - full transcription of a melody or solo line, with chords.
• Lick in every key - one short lick, automatically transposed through all 12 keys. See Lick in every key below.

Drop or browse for an MP3, WAV, or FLAC file, or a video (MP4, MOV) (max 100 MB). Processing runs through several stages - converting, separating instrument stems, transcribing notes, analyzing BPM/key, detecting chords, and building the notation - shown with a progress bar. Stem separation is the slowest step, typically 8-15 minutes on CPU. When it finishes you're returned to your library, where you can open the new practice item.

Opening a song shows:

• A header with the song title, detected key, note count, and instrument picker
• The transport bar - playback, loop points, tempo, and (for songs) melody-source correction
• The notation staff, which auto-scrolls to follow playback
• Icons for downloading (⬇), the stem mixer (🎛, songs only), and notation settings (⚙)

⏮ ⏪ ▶/⏸ ⏩ - return to start, rewind/forward 5 seconds, play/pause.

♪ (Play notes)- plays the transcribed notes back as clean MIDI, separately from the actual audio. Useful for checking whether a transcription sounds right without the original recording's texture getting in the way.

A/B loop - click [A] and [B] at the points you want to loop between, then ↺ to turn looping on. ✕ clears the loop points.

Tempo slider - changes playback speed (0.25x-1.5x) without affecting pitch. This is different from the BPM ÷2 / ×2 buttons next to the detected tempo, which correct the song's detected BPM itself (for when the analyzer picks double-time or half-time by mistake) - that changes how the notation is laid out in measures, not how fast it plays back.

Click the instrument name in the header (e.g. "Tenor Sax ▾") to switch instruments - the notation re-transposes instantly without re-processing the audio. Currently supported: Tenor Sax, Alto Sax, Trumpet, Flute, Clarinet, Oboe.

The settings menu (⚙) toggles:

• Chord symbols above the staff
• Chord tones shown as gray noteheads alongside the melody
• Note stems & flags
• Sharp/flat accidental symbols
• Dark/light staff theme

Songs are scored section by section to decide which stem (vocals, guitar, piano, or other) is carrying the melody at each moment - this is how the app follows a vocal verse into an instrumental solo and back. If it gets a section wrong, two tools can fix it:

• Lead from: Auto/Vocals/Guitar/Piano/Instrument - re-transcribes the entire song from one stem. Use only if the whole song should come from a single source; it discards the mixed per-section result.
• Lead source(expandable section) - lists each detected section and lets you pin a different stem for just that section, then apply. This is the one to use for "the solo at 1:10 should be guitar, the rest is right."

Click a notehead to select it - a small red delete button appears above it. Click the button to remove that note. Click anywhere else on the staff to deselect without deleting. There is currently no undo, so a delete is immediate and permanent.

Click the ⬇ icon in the header to download the current notation as MusicXML (for notation software like MuseScore or Finale) or MIDI. Both use written pitch - what's shown on screen and what you'd actually play on your instrument.

Upload a short lick and it's laid out back-to-back in all 12 keys, cycling through the circle of fourths starting from the lick's own key. Each key gets a one-measure count-in (silent, with a metronome click in the audio) before the statement plays. Practice audio is pitch-shifted per key from your original recording, not re-synthesized.