Quite confusing. Keymashing during combat ends it very quickly, and the combat music (all 3 songs) started randomly playing (at the same time) ~5 minutes after a fight.
Yes, you're absolutely right; sadly I didn't manage to get the combat working quite how I had hoped in time, and also managed to introduce that rather unfortunate audio bug at the last minute.
I've made a bunch of changes and fixes now though. Thank you very much for the feedback!