Even though I’ve been very, very familiar with this entire album for years, I began transcribing “Bird Calls” by listening to the album take several times, slowing it down to listen for the closest intricacies I could get, and comparing with other more recent versions (like the Mingus Big Band). It’s very hard to adapt Mingus’ intended writing by ear! Mingus was such a master at blending his composed music with improvisations (like Ellington before him), that it was hard to delineate what was pre-determined by Mingus, what was pre-determined by his musicians, and what was improvised on the spot. I think I landed fairly close to the proper notation and “bones” of the composition here.
** While many have attributed the song’s title to Charlie Parker (“Bird”), it’s actually a reference to the flighty and “bird call”-esque triplet rhythms played in the introduction.