Think about where you concentrate best. Some students study better where they live. Find the place or places you find most conducive to concentration. Research on productivity with music versus without music is inconclusive. If you think you need music, choose some with no lyrics and with relatively monotonous melodies.
Baroque music is the best example.
Something with words, a definite beat, a catchy melody, or one of your favorite pieces can easily divert your attention, often without your being aware of it at first. Your radio can be an inexpensive source of white noise. Switch to FM and team to the high end of your dial. You should get a steady static or form of white noise, unless your radio is an especially good one. Or keep a fan running.