Ricky Martin has sung many famous songs, but the one most people are usually asking about is “Livin’ la Vida Loca” , his massive 1999 hit that exploded worldwide and defined his crossover into English-language pop.

If you meant “what song is he best known for,” here are his biggest signature tracks:

  • “Livin’ la Vida Loca”
  • “María”
  • “She Bangs”
  • “La Copa de la Vida (The Cup of Life)”
  • “Shake Your Bon-Bon”

Since your question is phrased in the singular, “what song did Ricky Martin sing,” the clearest answer is “Livin’ la Vida Loca,” as that’s the song most strongly associated with him in pop culture.