After that, Ronstadt simply declined all invitations to do more.

Of course, one is always pleased to be asked, so tell them I said thank you.

Eight months ago, a medical diagnosis confirmed it.

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(For more about Parkinson’s disease, see the box on page 4.)

In the exchange that follows, Ronstadt assesses her career and explains how her Parkinsons was detected.

Q: You wrote your musical memoir,Simple Dreams, entirely yourself.

Linda Ronstadt Parkinson (Fabio Nosotti/Corbis)

Was that difficult for you?

A: Well, Id never written anything longer than a thank-you note before.

I never kept a diary or a journal.

Linda Ronstadt (John Shearer/WireImage/Getty Images)

Q: You talk in the book about your love for animals and your pet, Luna the cow.

A: Oh, Luna!

Q: You mean you have a tick disease now?

Linda Ronstadt Book Cover

Q: Is that why we dont see so much of you?

A: I cant sing.

I have Parkinsons disease, which may be a result of that tick bite.

So I cant sing at all.

I kept thinking, What if I tried singing upside down?

Or standing on my head?

[Laughs] Maybe Id be able to sing better then.

So I didnt know why I couldnt sing all I knew was that it was muscular, or mechanical.

Then, when I was diagnosed with Parkinsons, I was finally given the reason.

I now understand that no one can sing with Parkinsons disease.

No matter how hard you try.

And in my case, I cant sing a note.