Setting the scene
New York punk was evolving into new wave at CBGB, where Blondie shared stages with Talking Heads and Television. Debbie Harry's charisma and Chris Stein's guitar drove the band toward pop hooks without losing downtown edge. Producer Mike Chapman polished their sound for radio on earlier albums.
What happened
Parallel Lines was released in September 1978, with Heart of Glass's disco beat and One Way or Another's punk energy on the same tracklist. Harry's cool detachment and Chapman production made the band international stars. Picture This and Hanging on the Telephone filled clubs from Manhattan to London.
Why it still matters
The album sold over 20 million copies worldwide and proved punk bands could dominate dance floors. Heart of Glass's drum machine initially alienated some fans. Memorable detail: Heart of Glass was written years earlier as a slower ballad called Once I Had a Love before Chapman sped it into a disco hit.
Background
Deborah Harry became a new-wave icon.