This week Metro Week is all about mariachi music. The International Mariachi Conference is this weekend, and we’re exploring the education and cultural impact of the music in Tucson. Then our journalists roundtable analyzes the week’s news. Interviews: Davis Elementary mariachi band members Steve Carrillo, Mariachi Cobre Randy Carrillo, Mariachi Cobre Roundtable: Ernesto Portillo Jr., Arizona Daily Star Zac Ziegler, Arizona Public Media Dylan Smith, TucsonSentinel.com