The Dorian scale is the second mode of the major scale. It is often used in pop, rock, blues and jazz, and is one of the most common scales used to solo over static minor vamps. Practising this scale in all 12 keys is a crucial part of any guitar players practice routine. The 12 tracks included in this package provide a simple and effective Dorian modal vamp that allows you to practice playing, improvising, and creating melodies with this all-important musical device.