Before playlists and algorithms ruled the music world, the B-side was the secret playground where artists experimented, took risks, or tucked away tracks that didn’t quite fit the polished A-side release. Sometimes those songs stayed obscure. Other times, though, they quietly gained momentum, winning over fans, shaping careers, or eventually eclipsing the songs they were supposed to support. Here are 25 B-sides that proved the real magic lives on the flip side.