I’ve always maintained that anyone who DOESN’T pick Yoko Ono as the worst singer ever has NEVER heard her.
My opinion is that anyone who would describe her as a “singer” has never heard her.
I don’t know what her singing sounded like. Because whatever that was that she was doing, it wasn’t singing.
The really baffling part, though… did she somehow think that what she was doing sounded good?
It was more an elaborate fantasy on their father’s part. He supposedly had a palm reading by his mother that said his daughters would form a popular band. He wasn’t interested in music, the girls weren’t interested in music. He was just trying to fulfill the prophecy, and they didn’t want to insult their grandma in front of him. After he died, they didn’t play anymore and sold their instruments.
So, I kind of think of it as a rock album via a weird cult that wasn’t interested in the thing they were actually supposed to be doing. They just kind of felt forced to do it.
She is no more a singer than a drummer is a theremin player. She’s an artist. That isn’t always the same thing as being an entertainer. A lot of people (even, perhaps, her husband) don’t get that. I suspect the goal was to outrage the establishment. Mission accomplished.
That’s a poorly-defined goal, though. Enrage the establishment by publicizing uncomfortable truths about them? Worthy goal. Enrage the establishment (and everyone else) by producing sounds that hurt their ears? Not so worthy.
My opinion: she’s an artist only in the sense of "anything I do do, or even think, is art simply because I say it is. And I suspect her goal was always to get attention, any way she could. Her immense good fortune was to get into a relationship with an actual artist who was very famous, very wealthy, and very emotionally unstable. Her meal ticket for life.
Though I like to think she knew exactly what was going on here:
As I understand it, she was first and foremost a conceptual artist, and her art was what got John interested in her in the first place.
I am far from being able to judge or even say I understand conceptual art in general or hers in particular, but my impression is that, if you accept conceptual art as art, hers was/is the real deal, as worthy of respect as any other conceptual artist.
I happened across this recent article about her art by a fan:
Your opinion is just as valid as mine and I’m sure a great many, if not most people agree with you. I think some so-called artists like Yoko abuse the idea of Concept Art to ridiculous extremes. But there’s no right or wrong to it.
I think that the only “collective hope” that she inspired was the hope that she’d put down the microphone.
Well, those films were “influences”; their greatness lies in the fact that a lot of kids saw them and thought “Wow, I want to do that when I grow up, only better!”
Sort of like David Bowie 
OK, I’m not going to claim that Yoko Ono is in heavy rotation at my house, but I like some of the music she made with John and her vocal talents are certainly unique.
Any particular songs?
“Kiss Kiss Kiss” is the best song on John Lennon’s worst album.