On you tube there are people who get together with other you tubers and do collaborations where one guy plays bass,another guy drums ,another guy guitar,another singing,etc to basically make up a band and make songs by somehow split screening the different people playing and somehow they are on the split screen playing the same song with the timing synced and all. How is this done? Is special gear needed to do this or is it basic and I just need to learn how? I also see some you tube vids of like one guy with a split screen of just himself playing the different instruments and having it time synced together to play a song. I'd very much like to know how to do this but don't know how or whatr I would all need to do it. Is this very easy to do or pretty complex and what is needed to do it?