| ocd | Music.Theory.Metric.Polansky_1996 |
| ocm | Music.Theory.Metric.Polansky_1996 |
| ocm_absolute_scaled | Music.Theory.Metric.Polansky_1996 |
| ocm_zcm | Music.Theory.Metric.Polansky_1996 |
| Octave | Music.Theory.Pitch |
| octave | Music.Theory.Pitch |
| Octave_PitchClass | Music.Theory.Pitch |
| octave_ratio | Music.Theory.Tuning |
| OctPC | Music.Theory.Pitch |
| octpc_nrm | Music.Theory.Pitch |
| octpc_range | Music.Theory.Pitch |
| octpc_to_cps | Music.Theory.Pitch |
| octpc_to_fmidi | Music.Theory.Pitch |
| octpc_to_midi | Music.Theory.Pitch |
| octpc_to_pitch | Music.Theory.Pitch |
| octpc_to_pitch_cps | Music.Theory.Tuning.ET |
| octpc_trs | Music.Theory.Pitch |
| odd_to | Music.Theory.Tuning.Meyer_1929 |
| Off | Music.Theory.Time.Seq |
| of_c | Music.Theory.Metric.Buchler_1998 |
| old | Music.Theory.Metric.Polansky_1996 |
| olm | Music.Theory.Metric.Polansky_1996 |
| olm_general | Music.Theory.Metric.Polansky_1996 |
| olm_no_delta | Music.Theory.Metric.Polansky_1996 |
| olm_no_delta' | Music.Theory.Metric.Polansky_1996 |
| olm_no_delta_second_order | Music.Theory.Metric.Polansky_1996 |
| olm_no_delta_squared | Music.Theory.Metric.Polansky_1996 |
| olm_no_delta_squared_second_order | Music.Theory.Metric.Polansky_1996 |
| On | Music.Theory.Time.Seq |
| one_line | Music.Theory.Permutations |
| one_line_compact | Music.Theory.Permutations |
| On_Off | Music.Theory.Time.Seq |
| on_off_to_either | Music.Theory.Time.Seq |
| ordering_invert | Music.Theory.List |
| order_pair | Music.Theory.Duration |
| ord_hist | Music.Theory.Metric.Polansky_1996 |
| ord_invert | Music.Theory.Contour.Polansky_1992 |
| ord_to_int | Music.Theory.Contour.Polansky_1992 |