Blondie “Heart of Glass” went to #1 40 years ago this weekend, on April 28th, 1979. “Heart of Glass” was the third single from Blondie’s album Parallel Lines and is ranked on many best-of lists for best song of the 70′s, dance tracks and flat-out best songs of all-time. Debbie Harry and Chris Stein wrote the track way back in the mid-70′s (originally dubbing it “The Disco Song”) and included it on their wildly popular third record at the encouragement of producer Mike Chapman. With the track’s recording and then massive success, Blondie succeeded in bridging the divide between new wave and disco (they had dabbled in this crossover during concerts starting around ‘78 when they began covering Donna Summer’s “I Feel Love,” probably shocking their punk and art-rock fans and leading many of them to accuse Blondie of selling out).

This US version 12″ single copy has the regular single on the A side and an instrumental version on the flip. The UK 12″ release is the same but also includes “Rifle Range” on the B-side, a track that originally appeared on Blondie’s debut record Blondie from 1976.