Sometimes, in work (I'm doing a PhD), I listen to Radio Cymru or other Welsh music and just let it wash over me while writing. It doesn't distract me like English language radio would because, after all, I can't really understand it.
But today I put a podcast of Tudur Owen's on, oddly enough while writing about cognition, and I can't concentrate on writing. I keep picking up on snippets of sentences and words which are really distracting me. Disappointing given I'm enjoying listening to him but great, I guess, from the point of view of my understanding improving!