"Lithium" was released as the third single from "Nevermind" on July 13, 1992. Featuring a cover photo by Cobain, the single contained a sonogram of the musician's then-unborn child Frances Bean Cobain, as well as full lyrics for all the songs on "Nevermind". Cassette, CD, 12-inch vinyl, and British 12-inch vinyl picture disc editions included "Curmudgeon" and a live version of "Been a Son" (performed on Halloween the previous year) as B-sides. The British 7-inch and cassette featured only "Curmudgeon" as an extra track, while the UK CD release added a cover of the Wipers' "D-7" recorded for BBC Radio 1 disc jockey John Peel's program in 1990.