Ever since recurrent nagging injuries forced me off the tennis court, probably for good, I've relied on elliptical machines (plus diet) as the lead weapon in my hand-to-hand combat against the aging process (aka, very slow and orderly retreat). The problem is that I keep having to find music to listen to while I'm plodding through my 35 minutes. I have a 50+ year back catalog to draw on, but it has to be something I like hearing right now, that's sufficiently up-tempo, and it can't be too new to me (for a new album - and I do still think in "album" terms - I still need 2 or 3 conventional listens before it can work for me at the health club).
Today's successful re-discovery was Roxy Music's classic 1975 concept album - the Sergeant Pepper of painful romantic self-delusion - Siren. Highly recommended if you like 1960s or 1970s rock, or for that matter Radiohead.