Grace Potter & the Nocturnals aren’t nearly as big as VH1 Divas Salute the Troops performers like Katy Perry or Nicki Minaj. But thanks to a wildly adrenaline-inducing set that included a duet with Heart, the super-tight rock band with the ’70s retro vibe is crushing Twitter and reached #5 on Google’s Hot Searches in the U.S. directly after the show.