Danny Flores (born Daniel Flores; July 11, 1929 – September 19, 2006), also known by his stage name Chuck Rio, was an American rock and roll saxophonist. He is best remembered for his self-penned song "Tequila", which he recorded with The Champs, and which reached number one on the Billboard Hot 100.

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(l - r) Joe Burnas, Dave Burgess, Gene Alden, Dale Norris.and Chuck Rio/Daniel Flores |
In 1957, Flores met aspiring songwriter and guitarist Dave Burgess. After briefly performing as Danny and Dave, the duo recruited former members of Flores's group, drummer Gene Alden and guitarist Buddy Bruce, along with bassist Cliff Hills and Vocalist Huelyn Duvall, who were session musicians, to form the Champs. On December 23, 1957, the group recorded three songs for Challenge Records, including Flores's instrumental Tequila.
The song is highlighted by Flores's "dirty sax" arrangements and hollering of "Tequila". However, because of this one spoken phrase by Flores, he was credited as Chuck Rio to avoid conflicts with his other record label, where he was signed as a vocalist. "Tequila" was released as the B-side to the Champs' debut single, but after
listeners requested the song over its A-side "Train to Nowhere", "Tequila" propelled to number one on the Billboard Hot 100 in January 1958.
listeners requested the song over its A-side "Train to Nowhere", "Tequila" propelled to number one on the Billboard Hot 100 in January 1958.
Conflicts between Flores and Burgess over leadership and the band's musical direction led to Flores's departure in June, 1958. A heavy drinker in those days, he signed away his royalty rights in the United States for a pittance – though he always maintained that he had done so unwittingly, he told the Register in 2000. Ultimately did not receive any royalties from the tune, despite its success.
In the Fifties, he also recorded vocal sides for Modern under his real name, Danny Flores, while, in the early Sixties, he cut surf instrumentals for Saturn with the Creshendoes (who were sometimes billed as the Persuaders behind their leader Chuck "Tequila" Rio).
The saxophonist formed the Original Champs, who soon became known as the Originals, but never came close to creating another "Tequila". By 1963, Rio had moved to the Saturn label, where he cut a series of raucous instrumentals later gathered on the Surfer's Nightmare album.

Although the couple moved to Westminster, they still performed in and around Long Beach, and always played "Tequila," usually several times a night until 2001, when his Parkinson’s disease worsened. It was not until the early 2000s that he finally received royalties — albeit only for sales in Europe — for Tequila.
Flores died at the age of 77 on September 19, 2006 at Huntington Beach Hospital as a consequence of complications of pneumonia. (Edited from Wikipedia, Spectropop & The Independent)