Index - B
| Barline | Music.Score.Meta.Barline, Music.Score |
| barline | Music.Score.Meta.Barline, Music.Score |
| barlineDuring | Music.Score.Meta.Barline, Music.Score |
| BarlineType | Music.Score.Meta.Barline, Music.Score |
| Beat | Music.Score.Rhythm |
| before | Music.Score.Combinators, Music.Score |
| beginTie | Music.Score.Ties, Music.Score |
| Behavior | Music.Time.Behavior, Music.Time, Music.Score |
| Bpm | Music.Score.Meta.Tempo, Music.Score |
| breakList | Music.Score.Util |