Rainbow magic. Music fairies

If Rachel and Kirsty don't act fast, everyone could find out about Fairyland!

"Fairyland is hitting all the wrong notes! Jack Frost and his goblins have stolen the Music Fairies' magic instruments. Music everywhere is out of tune! Now the goblins plan to play the instruments in a TV talent contest. if Rachel and Kristy don't act fast, everyone could find out about Fairyland! Poppy the Piano Fairy's magic instrument is in a music store, guarded by a grumbling goblin. What's the key to getting it back?"--P. [4] of cover.