Bass Guitarmos Knights is the boss of Gerudo Ruins.

Bridge and 1F Skip

Goron Locket

You can skip the gears and 1F by swimming through the lava with Goron Locket and Flippers.

Hover Boots

By combining Hover Boots with knockback, Pegasus Anklet or Cane of Somaria you’re able to skip the gears.

Ghost Freddy

While Freddy is a ghost, he hovers over lava and as such is able to skip the gears and 1F.