Welcome to the glorious world of Renaissance music! I just did an essay on the Renaissance incidentally but no worries won't bore you guys with the history. Here is Victoria's O Magnum Mysterium sung by the Robert Shaw Singers. It takes a while to get used to sometimes music like this. But once you do its unbeatable! Pop and acapella is fun while it lasts but remember it only is the dessert, all sugary and nice. But what makes you full is the main course, and hardcore choral, once you appreciate it more fully, will satisfy you!