Greta Van Fleet’s guitar rock, the Allman Brothers in Blackberry Smoke’s southern rock, and Queen in The Struts ’70s glam rock. For the members of the Gen Z, Brooklyn-based Superbloom, “classic rock” is music created in the early-to-mid ’90s which means they pay homage not only to the first wave of grunge bands (Nirvana, Mudhoney, Soundgarden) but also the bands that followed in grunge’s wake (Stone Temple Pilots, Bush, Fuel). The raspy vocals with the fuzzy guitars on Superbloom’s recently released debut, Pollen, may sound familiar to those who listened to alternative rock radio in 1995, but there’s a freshness that the kids bring to the music.