once you have zora link to the witch shop go to the culling zone there throw the boomerangs (I think that's what it's called) drop a bomb as soon as it starts to come back play song of soaring with R until it crashes (Remember to create suspend points between songs) and move through the culling area area ( basically and then walk through the until the bomb explodes) then continue until it for how ever long I don't know but if you do it right eventually it should work I don't know how

can you post a video?

Yeah it might take a bit I have to upload it from my switch

My switch is being weird so please bear with me while I'll have bad quality on my vid

Feli_Heli are you there check your emails