"Someday" is a song by Julian Lennon, released exclusively on iTunes on 8 April 2013, Lennon's birthday. The track was added to the 2013 re-release of 2011's Everything Changes. The song includes lyrics from The Beatles' "Baby, You're a Rich Man".
Lennon said in early June that he was going to be writing with Steven Tyler. A few days after that statement Lennon said that he was recording "Someday", which was "written the previous Friday". In a Facebook post date July 2012, Lennon said that mixing for the song, and another song "In Between", was completed.