One of the best tracks from Jazzman's Jukebox Mambo comp - Lalo Guererro's 'Los Chucos Suaves' is perhaps the definitive recording in the short-lived Los Angeles sub-genre of Pachuco music - the sounds which emanated from the Mexican youth sub-culture of the same name in the late 1940s. A hybrid of American Jazz, Pop and Latin American rhythms, with songs sung in Spanish and dense in chicano slang, the movement was an intriguing sub-plot in the emergent narrative of rock and roll in the mid-century.