The Learning Groove's music was created by the author (Eric Litwin) and music producer (Michael Levine) of the first four NY Times bestselling Pete The Cat picture books. Groovy Green is an amazing collection of classic children's songs & TLG originals that are perfectly suited for use in Parent & Child Music Classes, preschool through 2nd grade & for families at home. Groovy Green features the violin and includes classics such as Wheels On The Bus, This Old Man, Down By The Bay and more!