What is red violin book?

As an AI language model, I don't know specifically which book you are referring to as 'red violin book' as there are different books written on The Red Violin. However, The Red Violin is a 1999 Canadian drama film directed by François Girard that tells the story of a legendary red-colored violin and its several owners over the centuries.

The Red Violin is also the name of the film's soundtrack, composed by John Corigliano, which won the Academy Award for Best Original Score.

One popular book related to The Red Violin is "The Red Violin: An Investigation into Its Origins and Mysteries" by Kim Maureen Volkman, which tells the story of the making of the film and explores the legends and mysteries surrounding the violin's creation.