Q: can some one copyright a song that consists of Apple Loops ?

can some one copyright a song that consists of Apple Loops  and  original vocals ? I would like to copyright a few of my  instrumentals that consist of Apple loops that I have put together in an original sequence and want to know if this is legally possible or not. I don't want to copyright the individual loops just  the entire instrumental song as a whole.  I know you can't sell them as loops neither would I want to do so. I just want to legally copyright my song before I put it on sound cloud. I would deeply appreciate any information on this matter thanks