She has never had a good voice. No control. Wavering all over the place and encouraging embarrassment from real singers and musicians.

What nonsense. I'm just listening to "Pretty Saro" from her album with Davy Graham - "Folk Roots, New Routes" - as I write this. Perfectly pitched, no wavering and completely controlled - one of the first recordings I ever heard of her. A classic album in my view.

I, as a good singer and musician

Well, we have only your opinion for that - any recordings we can see or hear - and perhaps compare with Ms. Collins?