| Natural | Music.Theory.Pitch.Note |
| ndp | Music.Theory.Tuning.ET |
| nearest_12et_tone | Music.Theory.Tuning.ET |
| nearest_24et_tone | Music.Theory.Tuning.ET |
| nearest_72et_tone | Music.Theory.Tuning.ET |
| nearest_et_table_tone | Music.Theory.Tuning.ET |
| nearest_pitch_detune_12et | Music.Theory.Tuning.ET |
| nearest_pitch_detune_24et | Music.Theory.Tuning.ET |
| negate_duration | Music.Theory.Time.Duration |
| Niente | Music.Theory.Dynamic_Mark |
| nil_duration | Music.Theory.Time.Duration |
| nk_combinations | Music.Theory.Combinations |
| nk_permutations | Music.Theory.Permutations |
| nn_reshape | Music.Theory.Duration.Annotation |
| Node | Music.Theory.Time.Bel1990.R |
| node | Music.Theory.Time.Bel1990.R |
| None | Music.Theory.Time.Seq |
| non_invertible | Music.Theory.Permutations |
| normalise | Music.Theory.Xenakis.Sieve |
| normalise_duration | Music.Theory.Time.Duration |
| normalise_milliseconds | Music.Theory.Time.Duration |
| normalise_minutes | Music.Theory.Time.Duration |
| normalise_seconds | Music.Theory.Time.Duration |
| notate | Music.Theory.Duration.Sequence.Notate |
| notate_mm_ascribe | Music.Theory.Duration.Sequence.Notate |
| notate_mm_ascribe_err | Music.Theory.Duration.Sequence.Notate |
| notate_rqp | Music.Theory.Duration.Sequence.Notate |
| note | Music.Theory.Pitch |
| notes | Music.Theory.Unicode |
| note_span | Music.Theory.Interval |
| Note_T | Music.Theory.Pitch.Note |
| note_to_pc | Music.Theory.Pitch.Note |
| note_t_transpose | Music.Theory.Pitch.Note |
| no_dots | Music.Theory.Duration |
| no_equalities | Music.Theory.Contour.Polansky_1992 |
| nrests | Music.Theory.Time.Bel1990.R |
| nrm | Music.Theory.Z12.Drape_1999 |
| nrm_r | Music.Theory.Z12.Drape_1999 |
| nseq | Music.Theory.Time.Bel1990.R |
| nthrt | Music.Theory.Metric.Polansky_1996 |
| nth_root | Music.Theory.Tuning |
| num_diff_str | Music.Theory.Math |
| n_12_4_3 | Music.Theory.Block_Design.Johnson_2007 |
| n_13_4_1 | Music.Theory.Block_Design.Johnson_2007 |
| n_7_3_1 | Music.Theory.Block_Design.Johnson_2007 |
| n_permutations | Music.Theory.Permutations |
| n_powerset | Music.Theory.Set.List |