Designed for ALL rhythm section players and teachers. Listen as you would any jazz recording as the melody is played in and out, solo, comp., and trade "4s". Tremendous tool for teachers; allows isolation and careful study of each instrument's role with definitive chapters in the booklet. Includes piano & guitar voicings, transcribed bass lines, and outstanding drum info. Includes transcribed solos by Haerle, Petersen, and Coolman. Our first Play-A-Long where the drummer can be turned off and students can trade 4s and 8s with the pros (Vol. 30B only). Vol. 30A is for Keyboardists/Guitarists; Vol. 30B is for Bassists/Drummers.