Dua Lipa, Pretend I Don't Exist, Future Nostalgia unreleased track. 

Dua Lipa - Pretend I Don't Exist

Katy Perry, "I Go To Sleep", Smile unreleased track. 

Katy Perry - I Go To Sleep

Lady Gaga, "Freakshow", 2007 unreleased track. 

Lady Gaga, "Reloaded", 2007 unreleased track.

Lady Gaga, "Let Love Down", 2007 unreleased track.

Lady Gaga, "PARTYNAUSEOUS", ARTPOP unreleased track, ARTRAVE version.

Lady Gaga, "Nothing On", The Fame Monster unreleased track.

Lady Gaga feat. Azealia Banks, "Red Flame", ARTPOP unreleased track, pretty sure it's more an Azealia unreleased track but anyways.

Lady Gaga feat. DJWS, "CAKE", track from the ARTPOP Era. 