Humdrum lab 8
Chorck is a chorale-syntax checking program for chorale textures.
[documentation for chorck](http://extras.humdrum.org/man/chorck)
cint is a tool that extract counterpoint modules from polyphonic music.
The three-interval counterpoint module for stepwise rising parallel thirds is "3 2 3". this can be done as a filter in VHV:
!!!filter: cint -O --search "3 2 3"
The -O option collapses intervals greater than an octave to less than an octave, such as 10th (an octave plus a 3rd) being transposed to 3rds.