On this day in 1979 “Gang of Four” released their iconic debut album Entertainment! This album went on to be one of the most essential releases in “Post-Punk” history, influencing a myriad of artists such as “Red Hot Chili Peppers,” Michael Stipe, and “Nirvana.” On this album the band delivered the anti-establishment ethos of “Punk Rock” with lead singer Jon King’s topical lyrical content of consumerism, feminism, sex, and alienation, and what separated the band from their peers was their heavy incorporation of genres such as “Funk” and “Dub” thanks to bassist Dave Allen and drummer Hugo Burnham. Add Andy Gill’s angular guitars to the mix that added a chaotic but controlled flavor, and you’ve got a sound that’s uniquely their own. You can still hear their Funk-driven influence on “Post-Punk” and “Indie Rock” bands today. Considering how the genre of “Post-Punk” can be obscure to some, it’s impressive how the band’s sound has managed to remain relevant after 40 years. Happy 40th anniversary.