I'm in the early Boomer cohort, and I like music from the mid-50's forward, depending on the song. I also like Sinatra and a few others from the MOR/Great American Songbook era. But it's very dependent on the particular song and artist. There was an evolution in recording techniques and sound quality that kicked into overdrive in the mid-to-late 60's, fueled by the Beatles, Simon & Garfunkel, and a few others who pushed the boundaries of the state-of-the-art with miking, multitracking, overdubbing, etc. Many songs that predate that era, even though they're great *songs*, sound dated as *recordings*, and as time marches forward that chasm only grows bigger.