Music Bug

Dear, Slug Disco Team

I've been playing free play with attack waves on but randomly the music stopped, I though my volume was broken, but it was not the pheromone marker noise I still heard so my volume wasn't broken. I tried going into the battle arena to see if the music was there, BUT it was not... :( I checked the settings the master volume etc was all the way up to epic. Please fix this or am I just an idiot who just maybe messed something up.

Love, Medin