Life This Day in Music History: April 9, 1977 By 100.7 BOB FM Posted on April 9, 2015 Share Tweet Share Share Email April 9th, 1977: ABBA becomes #1 on the US music charts for “Dancing Queen”! Such a groovy music video! Related Items:1977, ABBA, Dancing Queen, Music History, Music video, This Day In Music Share Tweet Share Share Email Recommended for you Best Rick James Songs | From ‘Super Freak’ to ‘Ebony Eyes’ Muse Releases New Music and New Video John Lennon Interview Tapes Go Up For Auction