Johnny Depp has taken a break from filming Whitey Bulger crime drama Black Mass to take part in secret recording sessions with Paul McCartney, Alice Cooper and Aerosmith's Joe Perry.

Speaking to the Chicago Sun-Times newspaper, guitarist Perry (63) said: "It's the great ego leveller. I was in the studio with Alice Cooper and Johnny Depp, playing guitar, and the three of us are looking at each other like, hey, we're sitting here with Paul McCartney! And we're all looking at each other like open-mouthed kids.

“At 72 he can still hit all those notes. However, the Aerosmith member refused to disclose any more details. "It's a project that we're keeping under wraps for now."

Depp joined Aerosmith on stage at their gig in Mansfield, Massachusetts to play guitar last Wednesday night. He jammed along with the band's 1974 hit, Train Kept a Rollin', which he also played with the band at a 2012 show at the Hollywood Bowl in LA.

The actor is currently filming Black Mass, a new drama about Boston-Irish crime boss Whitey Bulger, which is set for release next year.

The movie also stars Adam Scott, Joel Edgerton, Benedict Cumberbatch, Dakota Johnson, Juno Temple, Jesse Plemons, Kevin Bacon, Sienna Miller and Peter Sarsgaard.