Howard Levy plays a Klezmer- style tune in F minor, a Tango in F# minor, an Indian raga in Db, two swing tunes in E and B, a Flamenco rhumba in Eb minor, a funk tune in Ab minor, a Bossa Nova in A, a Jazz ballad in D, and blues in C, Bb, and G- original tunes in all 12 keys, ALL ON ONE STANDARD C HARMONICA. The tunes were specially composed for this video. Each one is melodic, using the structure of the diatonic harmonica to bring out the richest melodic textures in every key.
In a separate section of the video, Howard thoroughly explains the structure of each tune and the techniques needed to perform them. There are charts of each tune available as pdf files.