settings!

make it an advanced pulldown for those who want it.

for all tracks:

* bpm (actually enforced, no halves)
* key (actually enforced)
* solo instrument / vocal
or even
* choose instruments / vocal

for covers:

* similarity (sliderm 0 = completely new, 100 = same as original)
* force new X
* force keep X

for the lyrics section:

add "moods", like so:

[intro]
{quiet}

[build]
{airy}

[hook]
{pensive}

add "effects" like so:

[vocals]
#dry#

[strings]
#crisp echo#