 It's kind of hard to use any of the selections of tempo by Bird as saying this is a judgment that it should be brighter, meaning faster, than the Max Roach version. They're just trying to record the blues, Bird's line on it, a melody, chi-chi, and using music supplied by Max Roach, which in fact is the music manuscript in Charlie Parker's hand that Bird had given to Max Roach for Max's record date.