The Spanish name for a quinceañera’s formal waltz is vals.
Vals is simply the Spanish word for “waltz,” the partner dance commonly used in the celebration’s formal presentation. The performance may be danced by the quinceañera and her court, followed by dances with parents or other important relatives.
Quinceañera choreography often combines ballroom steps with modern staging. A family may select a traditional instrumental waltz, a Spanish-language song, or a contemporary track arranged for a slow partner dance.
The label vals describes the dance tradition, not one single required song. This is why different families can perform entirely different music while still calling the formal routine a vals. Regional practice and personal taste strongly influence the program.