Guillermo Velázquez is a Mexican musician from Xichú

Xichú

Xichú is a Mexican city located in the Northeast region of the state of Guanajuato. The municipality is entirely within the Sierra Gorda range and has an area of 912.20 square kilometres...

, best known for his folk music known as "arribeño huapango" and work with the Los Leones De La Sierra De Xichú. The rough guide to World music describes him as "probably the greatest living arribeño trovador".
He is a noted organizer and contributor to festivals in Mexico.