Rodrigo’s rise, and a masterful Morissette Tuesday. Ascendant pop-rock artist Olivia Rodrigo, a product of Disney shows such as “High School Musical,” is opting to build a career that lasts over one that flames out. Part of that includes the 21-year-old paying tribute to peers and forebears with her choice of supporting acts on her Guts Tour (see The Breeders and Chappell Roan, in particular).