WWW- The funky, seedy, bow-chicka-bow music of ’70s porn films has become a cultural touchstone — even for generations too young to recall a time when people watched X-rated movies in theaters.

Not much of the genre’s music has survived into the Digital Age, however. Which makes Klaus Harmony, Germany’s foremost erotic film composer, a standout. His oeuvre is available for download at www.klausharmony.com.

Known in niche circles as the Mozart of Porn, Harmony’s brassy — dare we say it? horn-driven — film funk helped motor the narrative of such Dutch porn classics as “Who Needs Dialogue?” and “The Ladies Man.” He was killed in a mysterious London record store explosion in 1984.

A Harmony biopic, “A Touch of Klaus,” is in the offing. And Britney Spears, to name one high-profile Harmony fan, has boasted of keeping her iPod stocked with the composer’s songs — compositions with titles such as “Get Off Marta, I Don’t Dig You,” “Gay Showers Punch Up Montage” and “Cycling Teens in Love” — that pack a visceral punch even before you hear them.