Comprehensive overview of commonly used chords. Suggests (and uses) a
unification for all different kinds of chord names.
+@item Ignatzek 1995
+Klaus Ignatzek, Die Jazzmethode f@"{u}r Klavier. Schott's S@"{o}hne
+1995. Mainz, Germany ISBN 3-7957-5140-3
+
+A tutorial introduction to playing Jazz on the piano. One of the first
+chapters contains an overview of chords in common use for Jazz music.
@item Gerou 1996