What episode of Pokemon is Misty's song in?

Misty never had a song.

But if your talking about the Song Ash and Misty sung together that's called:

Under The Mistletoe

(Type in on Playlist.com "Ash and Misty from Pokemon") It will Pop-up

"If you ever have any questions about Pokemon you just let me know!"

Misty does have a song. It is on YouTube called mistys song. Any questions about pokemon? Let me know!