Anything that was originally recorded on analog tape may be off speed "by accident", and of course the pitch/speed may be intentionally changed on anything. There are any number of CD's made from older analog masters that have been off-speed in some pressings; many "Beggar's Banquet" CD's prior to 2002, the Salvo CD of "Shine On Brightly", "The Doors", "Kind of Blue", etc.
CDP speed control
I spend a lot of time in my van. The radio's always on so quite often I hear a tune that initially seems slowed down but then I realize I've been listening to it sped up at home. Are these guys doing this to save space or improve performance? Like 45's vs. 33's? If so, is it not possible to incorporate speed control in a cdp? It really pissed me off when I bought a copy of the Beatles' Let It Be...Naked.