This is an Old post that probably died but if anyone is interested hear this U know the timebreaker sparrow right? Well take it in with u once you form the spire. Go to the jumping part (not the secret way) with it. It happened occasionally but there is one spot where if u land ur sparrow you can hear a distinct gong like u passed a checkpoint. Im not crazy and have tested this theory. Idk what it does maybe its one of the first steps but this doesnt happen with any other sparrow and you dont need your volume that high to hear it. I have ran the glass many times, im a musician in real life and would know when i hear something out of place. I even have proof of it on my share section but its not even hard to do and im not trolling. I think there is something way bigger we arent getting