Behold! when someone listens to the singing of a singer who is wicked, it is detrimental to his serving the Creator. But when he listens to a singer who is virtuous and worthy, it helps him, as will be explained.
Likutey Mohoran #3. This lesson was given on Shabbat, 7 Elul 5562 (September 4, 1802), in Ladizin, a town some 19 miles from Breslov.