Adam Guillain & Charlotte Guillain 
Reading Planet — Back at the Ballet — Turquoise: Comet Street Kids [EPUB ebook] 

Comet Street Kids reading books follow the adventures of Rav, Asha, Tess and Finn, four of the residents of Comet Street. There are 72 exciting stories in the series that children won’t be able to put down. Tess and Asha love their ballet dancing classes, so they re amazed to find themselves transported to a real ballet, hundreds of years ago! The show is about to start but two of the dancers are sick. Can the girls help to save the performance from disaster?Reading age: 6-7 years