Various artists use the name Juan: 1. Juan is also one of many aliases taken on by Rubén Albarrán. A songwriter, instrumentalist, record producer and lead singer of four-time Grammy Award-winning Mexican band Café Tacvba. 2. Juan is a power metal vocalist, from Washington, he's been rocking hard since the late 90's, currently he is the vocalist in a project with a guitarist named Farlo, power metal is their prime objective.