I am machmir on only listening to music that was performed by a Jew, but i don't really understand it. Does anyone know what is the source for this? Does Matisyahu perform with only Jews?
Here's a summary of Igrot Moshe Yoreh Deah 2:56, which says that the bottom line is that "it is forbidden to listen to non-Jewish religious music ... However, if the song is written and/or song by a non-Jew but has no religious purpose, then there is technically no prohibition."
In a Q&A session by R' Hershel Schachter I recently heard, he explains (I forget based on who) that artists put some of their essence into the art they make, so when you consume art, you internalize a little bit of the artist's soul. So, he advocates against listening to music composed by non-Jews.