Dave Brubeck: Time In.
Nowadays I usually work out at home or in the park, but a few times each year I go to a gym and this morning was such an occasion. I'm too busy concentrating on not dropping heavy weights on my head to be all that aware of (or even care about) what music is being played there, however I was hugely surprised to suddenly hear Brubeck's '40 Days' from this album. Surely a mistake? In any case, I'm home now and listening to the whole disc. Good stuff.