John Valby

John Valby is an American singer-songwriter, pianist, and comedian, widely known by his stage persona «Dr. Dirty» for a decades-long career built on extremely explicit, obscene parodies of well-known songs. He built a large regional and cult following through raucous live shows filled with crude, taboo-breaking humor set to sing-along piano melodies.

Musically, his repertoire draws on familiar folk, novelty, and pop tunes — reworking recognizable melodies like «Barnacle Bill the Sailor» into vulgar comedic sets rather than pursuing original songwriting in a conventional sense. Tracks such as «Skeeter», «The Candy Bar Poem», «Leprosy», and «Who Gives A Fuck» exemplify his no-holds-barred approach, aimed squarely at adult audiences seeking shock-value entertainment rather than radio-friendly pop.

Notably, despite the crude nature of his material, Valby's musical foundation was formal: he learned piano from nuns during his Catholic school education, an irony he has often referenced himself. His act occupies a singular niche at the intersection of live comedy and piano-driven parody music, distinct from mainstream pop despite the loose genre classification.