//R
//R/df.R
//R/sf.R
//R/data.R
//R/freq.R
//R/keys.R
//R/midi.R
//R/plot.R
//R/tabr.R
//R/time.R
//R/modes.R
//R/music.R
//R/notes.R
//R/pitch.R
//R/utils.R
//R/chords.R
//R/lyrics.R
//R/phrase.R
//R/scales.R
//R/tracks.R
//R/convert.R
//R/options.R
//R/repeats.R
//R/snippet.R
//R/strings.R
//R/lilypond.R
//R/noteinfo.R
//R/intervals.R
//R/lp_render.R
//R/transpose.R
//R/chord_mapping.R
//R/class_methods.R
//R/phrase_helpers.R