I'll go with Chrono Cross' Hurricane (also known as Gale). That one is really annoying, and I got fed up with it after going through the first few areas (the beach near Serge's home and the beginning of Another World). Another one I disliked was FFX's battle theme. That one was just way too cheerful, and I was annoyed by it especially during areas with disturbingly high random encounter rates, when I had to keep listening to it all the time. I don't think FFX-2's battle theme was too good, but at least it wasn't totally irritating.