the artist actually sent me that cd cover and told me to make it just like that but updated with my own twist to it. and after searching on the internet for anatomy pictures of human muscles I came upon this pic, why wouldnt I use it.
I blended together this pic and a pic of himself that the artist sent me.
I think that almost every concept has been used on cd covers so sometimes its alright to be inspired by other work..U just have to put your own stlye into it tho which i think i did.