Well, you are right, in this respect it is much cheaper to find sites with copyright free music than to buy services of sound directors. Well and you can save money quite a lot, especially when writing a whole music album, will need a lot of background music. Here's a good site for you with a selection of
rap background music. You can pick up anything you want and it's much cheaper. Listening to the music on this site is free, the download works on a subscription, the cost of a subscription to the site a month is $18.