Juan Ramón Delgado, known professionally as Moncho Leña, was a pioneering Puerto Rican timbalero and bandleader who significantly influenced the Latin music scene in the mid-20th century. In 1952, he founded Los Ases del Ritmo, a band celebrated for its innovative fusion of traditional Puerto Rican plenas and Cuban mambos. Their dynamic performances at New York's famed Palladium Ballroom in 1955 garnered widespread acclaim. Collaborating with renowned vocalist Mon Rivera, Moncho Leña's ensemble produced notable albums such as "A Night at the Palladium" (1957) and "Dance" (1958), leaving an enduring legacy in Latin music. ([ansoniarecords.bandcamp.com](https://ansoniarecords.bandcamp.com/album/a-night-at-the-palladium-with-moncho-le-a?utm_source=openai))