We present a parser for the world famous Billboard dataset
containing the chord transcriptions of over 1000
professional chord transcriptions of popular music randomly
selected from Billboard magazine's ``Hot 100'' chart
between 1958 and 1991, all time-aligned with audio.
See: W. Bas de Haas and John Ashley Burgoyne,
Parsing the Billboard Chord Transcriptions, Technical Report
UU-CS-2012-018, Department of Information and Computing
Sciences, Utrecht University, 2012.
(http://www.cs.uu.nl/research/techreps/repo/CS-2012/2012-018.pdf)
And: John Ashley Burgoyne, Jonathan Wild, Ichiro Fujinaga,
An Expert Ground-Truth Set for Audio Chord Recognition and Music Analysis,
In: Proceedings of International
Conference on Music Information Retrieval, 2011.
(http://ismir2011.ismir.net/papers/OS8-1.pdf)