PALM SPRINGS, April 12 — Hordes of music fans were arriving in California’s Coachella Valley for the premier arts festival that begins today and features headliners Lana Del Rey, Doja Cat and Tyler, the Creator.

No Doubt — the group fronted by Gwen Stefani, which reached peak fame in the 1990s — will also reunite onstage for the first time since 2015.