honestly it really depends on what you are trying to do with the tags, if you want the beat to be downloaded and rapped over like most free beats from juliano, then you want something clean you can drop it without effecting the beat negatively....
however if you just want the beat to be heard, but secured until private sell, then you can use something like a movie clip or talking stating where to go to purchase the beat, repeatedly covering the entire beat
either way, any emcee with a mic can do drops for you if you tell them what to say and where to send it, i have several myself that could help you out if you need them to
