How Come is the title of a song co-written by Ronnie Lane and Kevin Westlake, and recorded by Lane as his first single in 1973 after he left The Faces. Featuring a band of constantly changing personnel called Slim Chance, including Benny Gallagher and Graham Lyle, who later had considerable success as a performing and songwriting duo in their own right, it reached No. 11 in the UK.
Gallagher played piano accordion and Lyle mandolin on the A-side, both also contributing back-up vocals. "Done This One Before", on the B-side, featured Gallagher on Hammond organ and Lyle on harmonica.