This starts as a conventional rock rhythm with a musical hook at bars 4, 12, 16 and 20. There is then a transition to bop style, what I refer to as a bop quaver with accents and inflections. The rhythmic hook also appears sporadically in the reprise of rock style — with a penultimate bop flurry at bar 72, and the last word on the subject occurring in bars 75/76.

When transposed, as this is, the score puts clarinets into the friendly key of C major with carefully judged dynamics to ensure a go...