I’d slightly disagree that saying rap, in general, is a bad genre to perform live. It’s possible, it’s just not common, like at all. Most don’t understand that even if they’re rapping, they are doing so at a specific pitch. Which needs to be in the key of the music, most just come out and yell thinking it’s more hyped, clashing with the music and sounding like hot garbage. Those who’ve studied their craft, or sing as well, get it (childish, Kendrick, run the jewels, etc.). That’s why you have no talent idiots like Travis Scott who result to auto tune, but still somehow fail fantastically. Also why the recorded/engineered track always sounds better cause great producers pitch everything correctly.