Task: Explanation
Input (English): Los Lobos (] , Spanish for "the Wolves") is an American rock band from East Los Angeles, California, United States. Their music is influenced by rock and roll, Tex-Mex, country, zydeco, folk, R&B, blues, brown-eyed soul, and traditional music such as cumbia, boleros and norteños. It gained international stardom in 1987, when their cover version of Ritchie Valens' "La Bamba" topped the charts in the U.S., the UK and several other countries. In 2015, it was nominated for induction into the Rock and Roll Hall of Fame. Question: What rock band topped the charts with their cover of "La Bamba" in 1987 and had a band member with a guest appearance on Dolly Parton's "Treasures" in 1996 Answer: Los Lobos
Output (English):  It gained international stardom in 1987, when their cover version of Ritchie Valens La Bamba topped the charts in the U.S., the UK and several other countries.