http://youtu.be/5ZrX99eDPC0?t=34m48s
Nicki Minaj delayed David Guetta's album from it's original release (in September?) to make changes to her track, after the album was sent to factory. This then enabled Sia to add another track too.
Jokey thread title aside, it's good Nicki realises how important "Hey Mama" is to the era. Also worth noting "Hey Mama" was recorded months ago. In fact, Bebe Rexha first started talking about the song in March. So Nicki has flat out lied to fans about not doing dance.
'Listen' is out Nov 24th worldwide and is the follow-up to David Guetta's 4.25M selling 'Nothing but the Beat'.