Beware The Woozy:
Despite opening the series this is not an origin episode as Dorothy is already in Oz.
Ozma accidentally got herself petrified so Dorothy and friends goes find the Woozy as part of the way to get Ozma de-petrified.
Fun when they got the Woozy out of his captivity and taking him to de-petrify Ozma.
Interesting said mandolin which makes people dance by day and trance by night.
Wilhelmina steals the mandolin for her own purposes.
Not bad plot about the use of the mandolin.