What is non-christian music? Would that not be the lyrics? All things come from God:
Eph 3:9 And to make all men see what is the fellowship of the mystery, which from the beginning of the world hath been hid in God, who created all things by Jesus Christ:
So I would not label "music" as non-christian but I would label the lyrics non-christian. I jam on guitar. I play everything from gospel-country-classical-blues-thrash metal. This talent was given to me by God and I use that talent for God. Don't judge the music, judge the lyrics..
My $0.02