Question:
Can one listen to music to help him concentrate (keep him awake) if it is not for enjoyment?
Please add mareh mekomos
Answer:
Hello,
Under the assumption that you need to stay aware in order to do your work, Rav S. Kaminetzky shlit”a writes that since it is not being done for enjoyment, rather to keep you awake to be able to do your work, that it is permitted.
Best wishes
Sources:
קובץ הלכות ספה”ע פרק ט’ סעי’ י”ד “וכן נהג מכונית מותר לו לשמוע נגינה כדי לשמור שלא ירדם.
