So... did he play DragonForce, or Amon Amarth? Maybe he just played the screaming bit from "Immigrant Song?"
I wonder who you summon if it was a saxophone instead of a trumpet...? Like, would a smokey Sax line summon Freya, and cause you to consummate your Harem?
Or maybe could you make an Yggdrasil drum and lay down sick beats to summon Tupac, gifting you with wisdom and foresight?
(Tupac was a Norse god, right? Just Heimdallr in disguise, yeah?)