When it comes to mashups (a recording created by digitally combining and synchronizing instrumental tracks with vocal tracks from two or more different songs) I feel that Wax Audio is the best in the game. The guy also picks some great songs to mashup as well. Do you like Van Halen? Do you like AC/DC? Well if the answer is yes, why not put them together. Remember someone put peanut butter and jelly together at some point in time. If you want to see more the link you his YouTube channel is below.