Paul McCartney was joined by Aerosmith frontman Steven Tyler on Friday night (June 28th) during the first night of his two-show stand at Las Vegas’ T-Mobile Arena. Tyler and “Macca” trade off lines during a particularly hot rendition of the Beatles‘ 1968 “White Album” classic, “Helter Skelter.”

Tyler and McCartney have been friends for years, with Tyler having performed selections from Abbey Road during the former-Beatle’s 2010 Kennedy Center Honors tribute. Their daughters — Liv Tyler and Stella McCartney — have been close for decades.

During his recent solo shows, Tyler has been performing a medley of Beatles tunes featuring “I’m Down,” “Oh! Darling,” and “Come Together.”