I recall there was a woman who filled concert halls by purposefully singing dreadfully off key.
She succeeded by causing her audiences to laugh hysterically.
I have tried to find her on youtube but haven't yet.
While doing this I discovered that there is technology in use in the music business which actually corrects out of tune singing !
Auto-Tune - Wikipedia, the free encyclopedia
There are examples on youtube of Katy Perry. Britney Spears, Rhianna, Lady Gaga etc , showing their awful singing before autotune correction.
It just goes to show how very false 'celebrity culture' is.