I hope you haven’t put away your balls yet-your disco balls, I mean (we love sophomoric humor here at Popblerd central). I have returned to continue my list of the 100 Grooviest Disco Songs of all time! Here’s #81-#90 , in case you missed it. Now, moving on!! 80. “I Hear Music in the Streets” by Unlimited Touch 79. “Working Day & Night” by Michael Jackson http://www.youtube.com/watch?v=PyfHNUBY1lY