License Purchased means once you bought the song, you'll get to use it in the ways others could not. Exclusive means you own the exclusive right to the song, and it can't be purchased by anyone until the agreement expires. Either one you pick, you can choose how long you hold the said right to it. The longer the time, the higher the cost. Read more about the rules here: https://docs.google.com/document/d/1JkL_1vo4h45zo_8H-ICzP4ftfq003S-ur-c7kO6sbmM/edit?usp=sharing