James Louis McCartney is an English-American musician and songwriter. He is the son of singer, songwriter, and former Beatle, Paul McCartney. He has contributed to solo albums by his parents, including Flaming Pie (1997) and Driving Rain (2001) by Paul McCartney, and Wide Prairie (1998) by Linda McCartney. He has released two EPs and two albums. His most recent, The Blackberry Train, was released on 6 May 2016.

Sean Taro Ono Lennon is an American-British musician, songwriter, producer, and multi-instrumentalist. He is the son of John Lennon and Yoko Ono, and half-brother to Julian Lennon. Over the course of his career, he has been a member of the bands Cibo Matto, The Ghost of a Saber Tooth Tiger, The Claypool Lennon Delirium and his parents' group Plastic Ono Band. He has released two solo albums: Into the Sun (1998) and Friendly Fire (2006). He has produced numerous albums for various artists, including Black Lips and the Plastic Ono Band.