I've been creating and using loops for my own and other artists' songs. My question is about uploading a loop I've created regarding another artist's song. I'll use, Shadows, by David Crowder for an example. I have a loop for this song we use in live worship. Am I able to upload this loop for sale/distribution? The loop is patterned after the song itself and sounds very similar. I'm not new to making loops but am in regard to understanding how I can sell/distribute them. A friend told me I could do that here. I just don't know the legality concerning doing this with a publisher's copy written song. Any specific help would be appreciated.