: While not credited as a "featured artist," background vocalist Myah Marie reportedly performed a significant portion of the vocals on the studio version, with Spears' own vocals appearing primarily in the bridge and outro.
: An unofficial remix exists that features a verse from Azealia Banks . Work Bitch
"Work Bitch" by Britney Spears Lyrics | List of Movies & TV Shows : While not credited as a "featured artist,"
: The song was executive produced by will.i.am , who also co-wrote it. His influence is prominent, and the track followed their successful 2012 collaboration, "Scream & Shout". "Scream & Shout".