| assemble | amalgamate two or more Humdrum files |
| census | determine general properties of a Humdrum input |
| cents | translate selected Humdrum pitch-related representations to cents |
| cleave | join tokens from two or more Humdrum spines into a single output spine |
| context | congeal Humdrum data records to form a contextual frame |
| correl | measure the numerical similarity between two Humdrum spines |
| deg | translate selected Humdrum pitch-related representations to relative scale degree (**deg) |
| degree | translate selected Humdrum pitch-related representations to absolute scale degree (**degree) |
| diss | calculate the degree of sensory dissonance for successive spectra
(**diss) |
| ditto | replace Humdrum null tokens with previous data token |
| encode | interactive Humdrum encoding from MIDI input |
| extract | get specified spines from a Humdrum input |
| fields | list spine/field structure of a Humdrum file |
| fin2hum | translate Finale files to Humdrum |
| freq | translate selected Humdrum pitch-related representations to frequency |
| hint | determine harmonic intervals between concurrent pitches for Humdrum inputs |
| hum2fin | translate Humdrum files to Finale |
| humdrum | general syntax checker for Humdrum files |
| humsed | stream editor for Humdrum inputs |
| humver | display Humdrum toolkit version and copyright information |
| infot | calculate information theory measures for Humdrum inputs |
| iv | determine interval-class vectors for successive vertical sonorities for Humdrum inputs |
| kern | translate selected Humdrum pitch-related representations to **kern |
| key | estimate the key for a Humdrum passage |
| melac | calculate melodic accent values for successive pitches in a Humdrum input |
| metpos | assign metric position indicators to Humdrum sonorities |
| midi | convert from **kern to Humdrum **MIDI format |
| midreset | reset MIDI controller card |
| mint | determine melodic intervals between successive pitches for Humdrum inputs |
| nf | determine normal form for successive vertical sonorities in Humdrum inputs |
| num | number selected Humdrum records according to user-defined criteria |
| patt | locate and output user-defined patterns in a Humdrum input |
| pattern | exhaustively locate and count user-defined patterns in a Humdrum input |
| pc | translate Humdrum semitone representation or pc to pitch-class |
| pcset | convert Humdrum pitch and pitch-class information to set-theoretic representations |
| perform | play Humdrum **MIDI files |
| pf | determine prime form for successive Humdrum vertical sonorities |
| pitch | translate selected Humdrum pitch-related representations to American standard pitch notation |
| proof | check syntax of Humdrum **kern file |
| recode | recode numeric tokens in selected Humdrum spines |
| record | record live MIDI input in Humdrum **MIDI data format |
| regexp | interactive regular-expression tester |
| reihe | output specified row variant for a given Humdrum prime row input |
| rend | split data tokens from specified Humdrum spines into component sub-tokens |
| rid | eliminate specified Humdrum record types |
| scramble | randomize order of either Humdrum data records or data tokens |
| semits | translate selected Humdrum pitch-related representations to numerical semitones |
| simil | measure the non-numeric similarity between two single-spine Humdrum inputs |
| smf | generate standard MIDI file from Humdrum **MIDI input |
| solfa | translate selected Humdrum pitch-related representations to tonic solfa syllables (**solfa) |
| solfg | translate selected Humdrum pitch-related representations to French solfège notation |
| strophe | selectively extract strophic data for Humdrum inputs |
| synco | measure degree of metric syncopation for Humdrum input |
| tacet | reset MIDI channels to ensure silence |
| thru | expand Humdrum abbreviated format representation to through-composed format |
| timebase | reformat Humdrum **kern or **recip score with constant time-base |
| tonh | translate selected Humdrum pitch-related representations to German pitch notation |
| trans | transpose selected Humdrum pitch representations |
| urrhythm | characterize Johnson-Laird rhythmic prototypes in a Humdrum passage |
| veritas | validate that a Humdrum document has not been modified |
| vox | determine number of simultaneously active pitches in a Humdrum input |
| xdelta | calculate sequential numeric differences between successive Humdrum data tokens |
| yank | extract passages from a Humdrum input |
| ydelta | calculate numeric differences for concurrent Humdrum data |
