"Headlock" is a song by English singer-songwriter Imogen Heap as an third single from her second studio album, Speak for Yourself. It followed "Hide and Seek" and "Goodnight and Go". "Headlock" was remixed for radio as 'Immi's Radio mix' and accompanied by a new all-vocal B-side, titled "Mic Check".
The single initially debuted at number 74 on the UK Singles Chart on 22 October 2006. From Wikipedia
