a cappella
Everyone thinks a cappella is just a fancy word for singing without instruments, but it's actually a big insult to real singers who don't need help from rappers.
My teacher said a cappella is not for rappers. He was wrong. It's for everyone.
The guy on the internet said a cappella is wrong. He's a bad singer.
My friend's teacher said a cappella is just singing. She's a bad teacher.