After a solid year of conversion, editing, and tagging, the iRb corpus is available in **jazz format at the Cognitive and Systematic Musicology Laboratory website. This corpus represents some 1186 individual songs, each encoded into **jazz, a new Humdrum-like specification.
Using tools from Craig Sapp's Humdrum extras as well as the bundled jazzparser.sh script, you can convert individual song files to the following sort of flat representation:
**jazz **kern **exten **solfa **mint **quals **dur
*thru *thru *thru *thru *thru *thru *thru
*M4/4 *M4/4 *M4/4 *M4/4 *M4/4 *M4 *M4/4
*D-: *D-: *D-: *D-: *D-: *D-: *D-:
2E-:min7 E- min7 re [E-] min7 2.0000
2B-7b13 B- 7b13 la P5 dom 2.0000
= = = = = = =
2E-:min7 E- min7 re P4 min7 2.0000
2A-7 A- 7 so P4 dom 2.0000
= = = = = = =
2D-:maj7 D- maj7 do P4 maj 2.0000
2G-7 G- 7 fa P4 dom 2.0000
= = = = = = =
*- *- *- *- *- *- *-
Because date information is available, large diachronic studies are possible. For a taste, here is a plot of changes in jazz chord usage over time:
A complete writeup will soon be available in Music Perception.