Currently, cycles in Survival by default use the Drunk World mechanics of switching which evil biome is the main one every day. It’s an ideal system for Survival IMO but that comes with a side effect.
Can the server by any chance automatically set the music to the classic Terraria music again? As much as I feel that the Drunk World seed’s biome mechanics are superior to regular-game ones (crimson and corrupt taking turns on being the main evil biome,) I can’t help but feel that the Otherworldy Music is pretty boring. The Party Girl dies a lot in Survival sadly, and she rarely even moves in at all, so most of the time it can’t be changed.
Alternatively, those same good Drunk World Evil Biome mechanics could just be artificially replicated by the server. I’m unsure how that would work though, or if it’s even possible, but in this case it may aswell be too big to code just for the sake of music style.