I have an acapella that I give to some EDM producers to use, non-commercially, on their songs. One producer emailed me asking to buy the acapella to use as a hook on beats that he leases and sells, like on SoundClick. I'm pretty sure he's going to want exclusive rights to the acapella. I'm really not sure how much to sell it for. Any advice, tips, price examples, or suggestions when it comes to selling acapellas and hooks to beat distributors?