The last track has a title but it’s really a medley of parts of different classic R&R tunes (Johnny B. Goode / Sweet Little Rock And Roller / Blue Suede Shoes / Whole Lotta Shakin’ Goin’ On).
I assume the recording is a single entity but should relate to the separate works?
They played the same medley several times. The same recording has been used on several releases but a few other recordings exist as well.
Probably, yes. Especially if as you said they performed it several times. You can use the work-work "medley relationship to link the original works.
This thread is relevant: