Available as part of the under-marketed Record Store Day "Black Friday 2010" event, this Bob Dylan 45 showcases two songs from the Whitmark Demos box (side A) and from the Mono box (side B; best of CD reviewed below).
"The Times They Are A-Changin'" is a wacky little version, apparently a publisher's demo (what they used to use to transcribe the music/lyrics for sheet music), with somebody playing piano... and it ain't Al Kooper! The keys are so innocuous, you know it's gotta be some writer or accompanist who played along while Bob sang the tune with the best diction you've ever heard.
"Like a Rolling Stone" is the mono mix, which has more punch than the original stereo version, but lacks a bit in the excitement arena. If this 45 hadn't've come in a picture sleeve and on red vinyl (US-style big hole, too), you'd have to pass this one by. You still might...