I have over twenty Theorytab collections containing analyses which require features currently not supported by Hookpad. There are over twenty such features which may be grouped into categories: (numbers within parentheses are the Theorytab counts of the respective collections)
- Extensions
- 11no3no5 chords (65), including C/D, Dm/E, Bo/C, and their transpositions
- add11 chords (5), usually madd11 instead of add11
- Thirteenth chords (5), often V13 or IV7/5 in the relative Major
- 6/9 chords (3), including also m6/9, m♭6/9, m♭6♭9, and o♭6♭9
- Inverted sus4 chords (4); this collection is a bit messy, but at least one entry has a functionally correct sus4c
- Non-diatonic chords
- Fully diminished seventh chord (37), the viio7
- Augmented triad (58) of the harmonic minor scale, including aug, augM7 and mM7
- The 7♯5 chord (14), which does not actually come from the
- The 7♭5 chord (22), that makes up the French sixthharmonic minor
- The dim9e chord (9), which is just the slash chord the viio7/1
- The ♯9 factor (6), usually with a seventh as well
- Chromatic slash chords (7), for example A/C, G♭m/C, or B/C = dimM7 (4)
- Other unclassified extended chords (28) that may or may not be possible on the diatonic scale, where even 7sus2 becomes slightly out of place
- Notations
- Tritone substitutions (10); I am not too sure with this one
- Valid applications of the major supertonic (12) or minor supertonic (18) predominants
- Valid applications of the applied dominant of altered scale degrees (14)
- Time structures
- Time signature (19), although pretty much the entire collection relates to the 6/8 time
- Additive time signatures (27)
- Notes spanning across rows (3)
- Triplets (50) and Duplets (3)
- 32th notes (11)
- Pitch structures
- Inline modulation (90) within a section
- Theorytabs where the harmonic minor scale (9) is appropriate
- Other scales (10)
- Atonal Theorytabs (7)
Non-A440 tunings
A fair proportion of my own analyses can be found within these collections; these collections are nowhere exhaustive (I only add those that I have seen), but there are certainly many more Theorytabs in the database that would belong in these collections, and hopefully the Hooktheory stuff will address and incorporate them in future releases of Hookpad, in the same way applied dominants and modal mixture were introduced years ago.
What other unsupported features do other Hookpad users face?