i have been discovering so many lately. some of them are really great.
i am loving these 2 at the moment.
https://www.youtube.com/watch?t=106&v=OP0SB9eK5qI - Reloaded
i think theres a sample of a Prince song in there,

https://www.youtube.com/watch?v=M4QD_nKje5o - Second Time Around

anyone know of anymore ?

I have an Unreleased Collection which contans a lot of songs. Some favourites of mine include:

Changing Skies
Filthy Pop
Vanity
Nothin' On But The Radio
Brooklyn Nights
Second Time Around
Situation Can't Go Right
No Way
Fever
Out of Control

Nothin' On But The Radio Is pop gold. One of her best songs ever,

I also really like Vanity, Glitter and Grease, Caks like Lady Gaga and Stache

I normally like a lot of artists unreleased but most of Gaga's are really bad and it's not hard to see why they never made her albums. But that's down to opinion of course.

really its the opposite for me, gagas the only one i could listen to a full album of her unreleased material.

Where does one get an unreleased collection ?

Google 'lady gaga unreleased collection' and a download link should come up somewhere, but check the links carefully