I'm recently started an internship at a small web dev company (only 2 dev and the boss), we're all around a table in an office, and the boss seem to be working only with some music on speakers. It seems to be an old habit. And so there is constant music (mostly pop, although she also give the speaker to others for a bit of genre variety). 

Problem is, music mostly disrupt my focus, especially when I don't like it (pop), and I'm tackling some complicated tasks (asynchronous dev in php).

At first I just thought I'd bring my earphones to counter it with some of my own, but she straight up refused it arguing it would be harder to communicate and offering me to put some of my music on the speaker instead.

I agreed but at the end of the day I'd much rather listen to my music only or not at all, as I can literally not think sometimes.

It doesn't seem to bother the other two, and as I'm just an intern I'm not sure I can just come in and change their habits. 

What should I do? Bear through it until the end of my internship (3.5 months left)? Try to push harder for allowing me to use my earphones?