Wizard of Oz like Audiobook

[mystarling]

It was an audiobook on CD I heard around 2005-2010. Strong Wizard of Oz themes (maybe one of the other L Frank Baum books? It seemed more like the original to me though). Main elements I remember:

- It was a musical: the first number was the man character singing about living in a rose cottage with her dad, who then died

- There was a fisherman the protagonist was warned against talking to by the 'Glinda' like character, but she did anyway and was given a magic whistle

- the quest they were given was to retrieve the witches magic eye (this may be from something else)

- I'm not sure of the companion characters were traditional WoO sidekicks, or something else

- in the end, 'Glinda' turned out to be the witch in disguise, and so her warning about the fisherman was her trying to prevent the protagonist from getting her hands on the magic whistle.

- the protagonist uses the whistle to shrink the witch away into nothing

Thanks!