Soundgarden front-loaded its 2½-hour show Sunday at the Orpheum with big numbers, digging deeper into its catalog as the concert moved along. It was a big, weird sprawl of heavy, trippy rock unencumbered by expectations and ended up doing more for Soundgarden’s legacy than a more polished show ever could have.

After all, the scene that Soundgarden helped define was called “grunge” for a reason.