This is a biographic, transcription book. Irefer back to this book quite often and It has had a tremendous effect on my playing. I feel it is well suited for all levels and styles of playing. Included are two tapes, on which several bassist give their stories on how Jamerson influenced their playing, and also play some of their favorite Motown tracks. In the book are transciptions of the tracks being played as well as a short bio on the respective players. The music is all trascription, no tabs which would be helpful. This is an excellent book. Every bassist should have a copy of it as required reading.