Headphones / earphones are always the answer. Not only can you listen to music with them on, listen to whatever music you want, it's also a bit more of an effo

Headphones / earphones are always the answer. Not only can you listen to music with them on, listen to whatever music you want, it's also a bit more of an effort for other people to bug you and take you out of the flow. Of course you can still be interrupted but the barrier is ever so slightly higher.