The phrase "music source" refers to where a person or device gets their music from. It could be a streaming service, a CD, a radio, or even a person playing an instrument. Basically, it's where the music comes from. Full definition
With music sources available over the air, internet or your own digital library, even the most familiar music can become an all - new listening experience. (acura.com)
Examples from other music sources can be helpful in brainstorming initial concept ideas for a score. (gamesauce.biz)
Despite the lack of online music sources, the stereo comes well - equipped with other digital sources. (cnet.com)