Lu was a Mexican pop duo formed by Mario Sandoval and Paty Cantú, both from Guadalajara, Mexico. Paty was studying Law, but she changed to Music when they were signed to Warner Music Mexico. Mario started to write lyrics at the age of 6 when he wrote a song called "Teresa." The sound of their music is similar to Aleks Syntek's, Sin Bandera, Mecano or Sentidos Opuestos. Their debut album is self-titled and was produced by Aureo Baqueiro, producer of artists like Natalia Lafourcade, Sin Bandera, Kabah, and Moenia. They have received moderate success in the Spanish-speaking world, with songs like "Por Besarte" and "Duele."