"Get Down Tonight" is a song released in 1975 on the self-titled album by the disco group KC and the Sunshine Band. The song became widely successful, becoming the first of their five No. 1 hits on the Billboard Hot 100. It also reached the top of the Hot Soul Singles chart and was an international chart hit, reaching No. 1 in Canada and charting in Australia (No. 44), Belgium (No. 11), the Netherlands (No. 5), and the UK (No. 21).
The song displays some of the signature characteristics of the disco era such as a fast tempo and repeating lyrics. The song also features a distinctive introduction, employing a guitar solo rendered at double-speed.
The song was originally titled "What You Want Is What You Get" before KC changed the title to "Get Down Tonight".