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identify_chord — Names the chord a guitarist is holding from the fret on each string (standard tuning), lists its notes and returns a chord diagram. Use when

get_chord_shapes — Returns playable guitar shapes for a chord name (open position and movable barre shapes), with frets, fingering where known, the notes in th

transpose_chords — Moves a song's chords to a new key. Accepts a chord list, a chord chart with lyrics (chord lines are transposed, lyric lines are kept), or i

find_capo — Works out where to put a capo. Give the key you want to sound in (for example to match a singer or a recording) and, optionally, the open-ch

get_scale — Gives the notes of a scale in any key and where they fall on the guitar fretboard (standard tuning), string by string, with root notes marke

find_key — Works out the most likely key of a song from its chord progression, gives each chord its Roman numeral, lists the other chords that belong t

find_songs — Finds songs a guitarist can play with the chords they already know, from Fretwork's free library of 87 public-domain folk, gospel, blues, ca

guitar_level_check — A quick self-assessment that places a guitarist on Fretwork's 10-stage learning path (Stage 0 Getting Started to Stage 9 Artistry) from yes/