On recordings of the famous Toronto Massey Hall concert of 1953 with Bud, Bird, Diz, Max, and Mingus--the classic bebop all-star quintet, Mingus's bass part is overdubbed over the original. Maybe that's why the bass part is so clear! I wonder if Mingus overdubbed the same notes he originally played? Did he play his own solos note for note?

There is a version without the overdubbing. I should probably get that one too.