With many recording artists style, swag, rhyme scheme, execution, and delivery finding the right beat that matches their overall persona as an artist can sometimes be a matter of trial and error. When an artist sought out to buy hip hop beats they sometimes find themselves stuck with a track that did not work for them. As a recording artist/producer myself I've made that mistake in the beginning of my career. I've purchased instrumentals and recorded on them just to find that it was an utter waste of time and dissatisfaction. Even with one of my best beats I've created my style didn't match the vibe and emotion the track was emitting.