The first disco hit was "Rock the Boat" by The Hues Corporation, closely followed by "Rock Your Baby" by George McCrae, both in 1974. Both songs hit #1 on the Billboard charts and really got the Disco craze going. Interestingly,

Rock Your Baby was written by Howard Casey, who went on to become KC of KC and the Sunshine Band, who had several No. 1 hits and whose sound became synonomous with Disco. Hope this helps.

Animated Disco Floor: secret code: PUZZLEPALACE (The code is found in the book: "Pick Your Path 1: Disco Mystery")

Sweet Genius - 2011 Disco Genius 1-1 was released on:

USA: 27 October 2011

Donna Summer.

The Cindy Margolis Show - 2000 Disco 1-3 was released on:

USA: 1 September 2000