This volume examines the synthesizer's significance for music and culture, with a range of contributors providing historical, musicological, practical and theoretical perspectives.The synthesizer as an instrument has evolved rapidly over the last 50 years, conveying different meanings in musical culture at various times in its history. For example, post-punk and new wave acts used synths to signify their embrace of futurism and modernity. Earlier psychedelic bands used the instrument to sonically represent mind expansion while prog acts signposted their lineage to the classical avant-garde. Techno artists used synths to escape the strictures of acoustic music in parallel with rave culture's desire for escapism from the mundanity of daily existence. It is now seemingly ubiquitous in modern pop music production.