I disagree with your example, because I don't think that's an accurate analogy. For instance, I could tell you why Trent's voice resonates in the way that it does, and go into more detail than "his voice is unique because it sounds unique to me". If you think her voice sounds unique, go into more detail about why you feel that way. Give some examples, because saying she has a "twang" and that it sounds unique to you isn't very convincing.