Louie Pérez has written many great songs for Los Lobos, but “Saint Behind the Glass” is especially close to his heart. It was inspired by a saint statue from his family’s home and now is part of the exhibit American Prophets: Writers, Religion and Culture at the American Writers Museum in Chicago. Perez offers that song’s origin story, digs into his songwriting dynamic with singer-guitarist David Hidalgo, discusses their trippy side project the Latin Playboys, reflects on the impact of Los Lobos’ smash cover of Richie Valens’ “La Bamba” and says whether, 10 years after their last album of original material, Los Lobos is preparing new music. He also reveals a recent health issue and whether it affected his return to the stage, he addresses how artists can respond to the current administration’s toxicity toward immigrants, and he offers inspiring words for anyone involved in the act of creation.