You've said it a hundred times. Maybe a thousand. And every time you say it, you train your brain to freeze the next time she walks into the room.
Leagues are a myth invented by guys who are scared of women.
She's a person. She has bad breath in the morning. She picks songs she can't sing in the shower. She overthinks her own texts.
Walk over. Say something. The league dissolves the second you open your mouth.
I never took any lessons. I just practiced a lot when I was a teenager. The way I learned was to sing along with songs and try making my voice and the voice on the recording sound 'as one' or 'in sync'. When you do that, you're hitting the notes dead on. Use songs where the singer holds the notes for a long period of time. "Bridge Over Troubled Water" is a good example.
Three seconds. That's how long it took. Your shoes. Your posture. The way you held your drink. Whether you looked at the floor or looked at her.
She already filed you away. Interesting. Boring. Safe. Bold. Before you even opened your mouth.
Everything you say after that is just her confirming what she already decided.
So stop rehearsing lines. Fix the first three seconds. Stand tall. Look up. Smile like you mean it. Walk like you belong wherever you're standing.
The words come later. The impression comes first.
Mine may not be much past 3 octaves, but yes, I used to do stuff like that when I played an acoustic solo act. I could flip from Joan Osborne or Sheryl Crow right into Neil Diamond. It always made people laugh, but in a good way.