"Picture's Feat."was the song going to be used at the duet, It was recorded and written and Michael sung and completed his Vocals. However Michael and Gaga never met or spoke. There were 15 others in line for the duet. No one was actually asked her it was just a list of People he wanted to check out. Michael was going to send the song Pictures to everyone he wanted and then pick the best out of them all. Like Gaga said herself she and Michael never spoke or met with each other. The duet was the last thing Michael wanted to complete so no one was asked or found to do the opening act by Michael or his people. So Yes Gaga was going to do a song for him, but so were 15 others. But the duet song is complete and just laying in the vaults. But Michael did write songs for Gaga and they were found.