The former Beatles stars' duet "Home to Us" is included on McCartney's upcoming solo album "The Boys of Dungeon Lane", which will be released on May 29.
Starr also plays drums on the song, which is about their upbringing in Liverpool.
"This song is made entirely with Ringo in mind," McCartney said, according to NME.
Artists Chrissie Hynde and Sharleen Spiteri also appear on the song.
