What is who sang rock and roll hoochie koo?

"Rock and Roll Hoochie Koo" is a rock song originally written and performed by American musician Rick Derringer. The song was released in 1973 and became Derringer's highest-charting single, reaching number 23 on the US Billboard Hot 100 chart. The song has since become a staple of classic rock radio and has been covered by many other artists, including Johnny Winter, Krokus, and Edgar Winter. Derringer has continued to perform the song throughout his career and it remains one of his most famous hits.