During the Satchmo SummerFest, Troy Andrews will perform on four different stages with five separate and stylistically distinct bands and switch between two horns—trombone and trumpet. Widely known as “Trombone Shorty” since his first appearance on the New Orleans traditional jazz and brass band scene at the age of four, the diversified 17-year-old was christened with a new handle at this year’s Jazz Fest. From the Acura Stage, Aaron Neville introduced the Neville Brothers’ special guest as “...