Though the teenage members of the Brubeck Institute Jazz Quintet have played together for less than a month, they have already achieved what many accomplished jazz musicians never will: At the Detroit International Jazz Festival over Labor Day weekend, they performed and shared the stage with legends such as Wayne Shorter, Chick Corea and Christian McBride. They even spent time with Dave Brubeck when he visited their rehearsal. When Brubeck listened to the group's arrangement of his 1956 jazz standard "In Your Own Sweet Way," he loved it, said Steve Anderson, director of the Brubeck Institute. "They're good. That's a given," Anderson said of the group, which will be a quartet Friday nigh