Singers: do you find you have to do things differently to sing in tune when you're singing quietly vs when you're singing loudly? If so, can you explain what you do? Stance? Breathing rhythms and depth? Something else? Are there good rock and roll or crooning singing lessons on YouTube you'd recommend? Background: During Covid, my wife and I have formed a duo. I play touch guitar (which is tuned to cover both bass and guitar range) and she plays drums and sings. The music is some kind of loud rock, but we do the loud/quiet thing a lot. She is not an experienced singer but has an interesting voice and is a good musician otherwise (I know, I'm lucky!). We are now in the vocal overdubs phase recording, and have discovered something interesting: she is more in tune when singing loudly than singing quietly. I've recorded lots of singers so I can coach her on mic technique, but less on singing technique. Any advice would be appreciated. She's using the same in-ear monitors she uses in practice, so she doesn't have to get used to anything new. And it's just us at home, so I wouldn't say she is nervous. She's not super keen on vocal lessons right now (mostly a time thing), which is the extremely obvious answer.