The instructor puts on music. Usually, she uses something modern, at a low volume. However, tonight, she puts on a CD of "oldies". Oldies, as in do-wop and rock of the 50's and early 60's. And, she puts it on loud enough to listen to.
She has the attention of everyone in the pool, especially the pool, as "Rock Around the Clock" echoes off the walls of the pool area.
Next comes Lloyd Price's (You've Got) Personality.
And for the grand finale,