I exercise daily and i enjoy listening to music while i exercise. may i listen to music while i exercise during sefirah? if yes, it is better to listen to acapella only or may i even listen to regular music?
If the reason you are listening to the music is because it is enjoyable, then it should not be listened to during sefira. The reason we don’t listen to music during sefira is because it is a time of mourning, and we should not be enjoying music. However if it is needed in order to do the exercise, then it is permitted. Although listening to a capella music is controversial, it is better than regular music.
M:B 493-3, 560-13, Igros Moshe O:CH 1-166, Tzitz Eliezer 15-33(2), Kovetz Halachos Sefira 9-13.