The song’s distinctive "heartbeat" was created using a , which had to be manually synchronised with live drums—a painstaking 10-hour process in the pre-digital era. This fusion of technology and rock instrumentation helped define the "new wave" genre. Heart of Glass — when Blondie went disco — FT.com
Featured on Parallel Lines , clocking in at 3:54 . US 7" Single Version: A more concise edit at 3:22 . Blondie-Heart Of Glass -Disco Version- mp3
Notable variations include the Shep Pettibone Mix (5:34) and various instrumental tracks released on celebratory EPs. Production and Impact The song’s distinctive "heartbeat" was created using a