From the early 1970s onward he released nearly 30 full-length albums and wrote song lyrics for dozens of other Finnish artists.

Several of Leskinen's songs have reached classic status in Finnish popular music, e.g., "Viidestoista yö", "Kaksoiselämää" and "Syksyn sävel".

His last record, Senaattori ja boheemi (released in 2004), is a collaboration with Mikko Alatalo, a return to their partnership of the early 1970s.

Juice Leskinen's most famous songs include "Viidestoista yö" ("Fifteenth Night"), "Musta aurinko nousee" ("A Sun Rises out of Me", often misunderstood as "The Black Sun Rises" despite a clear pause between "musta" and "aurinko"), "Marilyn", "Rakkauden ammattilainen" ("Love Pro"), "Norjalainen villapaita" ("Norwegian Sweater") and "Kaksoiselämää" (Double Life).

A musical about Leskinen, titled Juice – taiteilijaelämää (an artist's life) premiered in Tampere on 30 August 2011.