Haha, by other applications I meant I remember there being some background music systems for elevators and retail stores and some early dictation systems and such that were slower, like in the 10 rpm range.

However… Software used to come on cassette tapes in the days of the C64 and the ZX Spectrum etc. I don’t see why you couldn’t record the same ‘sound’ onto an LP but I imagine the error rate might be far higher. In fact, I would be shocked if it’s never been tried.