Christmas music- can’t block it. Not even brown noise works.

I work in an open plan office, I have a colleague who likes Christmas music and has played it all week! It’s only Wednesday December 3. God help me! Not even brown noise in my ear plugs works. I can barely concentrate. I feel like I am about to explode. I haven’t worked here long, so I don’t feel I can tell her to turn the crap off.