The song, titled 'Only Wanna Dance With You', emerged as the star works on her second studio album, which is currently slated for a spring 2012 release.
Lyrics in the track include: "It's all I wanna do/ I only wanna dance with you/ Whatever I gotta do/ I want you to myself tonight, alright."
It is not known whether this is a demo of a song to be included on the follow-up to 2009's Animal.
'Only Wanna Dance With You' follows the leak of Ke$ha's demo for 'U Better Know', which surfaced online at the end of last month.
Speaking before about her second opus, Ke$ha explained: "I want to take enough time to make sure it's the reinvention of pop music. That's the ultimate goal, to reinvent pop music."
The singer recently featured on 'What Baby Wants' alongside Alice Cooper for his Welcome 2 My Nightmare album.
> Ke$ha: 'New album will be dirty'
Listen to Ke$ha's 'Only Wanna Dance With You' below: