Index - I
| initial | Music.Time.Reactive, Music.Time, Music.Score |
| Inline | Music.Score.Export.Lilypond, Music.Score |
| InnerSpace | Music.Score |
| inSum | Music.Score |
| inSum2 | Music.Score |
| Interval | Music.Score.Pitch, Music.Score |
| inv | Music.Score.Pitch, Music.Score |
| IsAttribute | Music.Score.Meta, Music.Score |
| isCompoundTime | Music.Score.Meta.Time, Music.Score |
| isConstant | Music.Time.Reactive, Music.Time, Music.Score |
| isMajorKey | Music.Score.Meta.Key, Music.Score |
| IsMidi | Music.Score.Import.Midi, Music.Score |
| isMinorKey | Music.Score.Meta.Key, Music.Score |
| isSimpleTime | Music.Score.Meta.Time, Music.Score |
| isVariable | Music.Time.Reactive, Music.Time, Music.Score |