From Thigpen's introduction:
It's understandably difficult for a young drummer to imagine that the various components of the drumset were ever utilized in a manner unlike the way they are today. In actuality, the approach was, at one time, considerably different, and Kenny Clarke had a whole lot to do with changing it all. His drumming led the way towards usage of the bass drum for accentuation as well as timekeeping; the establishment of a jazz-time rhythm for the ride cymbal, and freedom from a strictly metronomic role, forcing the bassist to share in the responsibility of timekeeping. Kenny Clarke can also be credited with freeing the left hand so it could interact with the soloist—the obvious reason why thousands of young student drummers still sweat over Jim Chapin's Advanced Techniques For The Modern Drummer...
To say that Kenny Clarke was "important,"or "influential, "or even "a key musical figure, "does not do his contribution justice. To state, unequivocally, that he was drumming's all-time Great Emancipator, a man to whom every jazz drummer who's ever lived owes a debt of gratitude, is perhaps a much more honest appraisal.
