First it was Kanye West and Rihanna, this time around Paul Mccartney has teamed up with another musical all star in the way of Lady Gaga.

Gaga took to Instagram posting one picture after a studio session “Had a beautiful session with Sir Paul McCartney and friends. Working on one of his many secret projects! Killer musicians, vibe, and lots of laughs.

And the other was a shot of the duo with Lady Gaga reminiscing of their first encounter “”Always a good time with my buddy,” she wrote. “I’ll never forget when he called me last year to work and I hung up the phone cuz I thought it was a prank!”.

We now sit back, wait and see what the pair release to the airwaves.

Always a good time with my buddy. I’ll never forget when he called me last year to work and I hung up the phone cuz I thought it was a prank!

A photo posted by @ladygaga on Feb 3, 2015 at 6:00pm PST

Had a beautiful session with Sir Paul McCartney and friends. Working on one of his many secret projects! Killer musicians, vibe, and lots of laughs.

A photo posted by @ladygaga on Feb 3, 2015 at 5:57pm PST