Just two weeks ago I heard an absolutely amazing cut by Freddie Hubbard (recognized him immediately) on WBGO out of Newark, NJ; but didn't recognize the tune nor the alto player. I called WBGO and left a message on dj Bob Porter's voicemail inquiring about the tune. Within an hour and a half he had called back to give me all the info I wanted. Try doing that with a streaming service.
Phil Schaap on WKCR is a national treasure with his incredibly in depth commentary and analysis of historical recordings. Yes, plenty of reasons to listen to FM.