All Day is the fifth studio album by American musician Gregg Gillis, known by his stage name Girl Talk.

The album was originally released as a free digital download by Illegal Art on November 15, 2010.

[2] As with prior Girl Talk albums, the Illegal Art website states that All Day was "intended to be listened to as a whole," but was "broken up into individual tracks only for easier navigation.

[6] The album, segmented into twelve "episodes", is used as the soundtrack to the 2011 feature-length Jacob Krupnick dance video, Girl Walk All Day.

[20] Reviewers frequently praised the innovation of the music style, saying that it is "like nothing you've ever heard",[21] "[rehabilitation for] disposable pop",[22] among those "tricks [that] just don't get old",[23] with appeal "first for the sampled songs themselves, [and] second for the thrill of the novelty of early mash-ups",[13] and that "the entire mega-mash-up is stupendously danceable".