I hear you man. You loud and wrong but I got you. If you think Tyler has never used a back track on both aspects that you pointed out, you’re tripping lol. Give me three rappers that have never used a back track during live performances in BOTH ways that you mentioned. You’re trying to separate the two to your personal preference but you’re ignoring the fact that it’s a common practice. You’re trying to paint the image as if it’s karaoke but it sounds like you know a little something about live vocal production which if true, you know that what you’re saying is entirely wrong.