Francisco Cárdenas, the 11-year-old boy who played guitar at an Alejandro Sanz concert | Video | CNN

Francisco Cárdenas began with music and guitar classes at the age of four, and one of his idols was always Alejandro Sanz.

For this reason, his father uploaded to social networks a song of the Spanish interpreted by him and Francisco, to which Sanz's team reacted with a great surprise.

Hear here how this boy's dream came true.