Little Rat Makes Music by Monika Bang-Campbell, illustrated by Molly Bang

From chapters.ca:
Little Rat can't wait to make music like the violinists she sees at concerts in the city. But her biggest obstacle is practising. It's "boring," It's "hard," And her violin squawks "a lot," Luckily, Little Rat's teacher believes she has talent. And her new tutor agrees. With their encouragement - and some fine- tuning - Little Rat hits all kinds of high notes. But most important, she discovers where beautiful music really comes from. In this third book of Little Rat's celebrated tales of triumph, Monika Bang-Campbell and Molly Bang prove that with a bit of pluck, patience, and practise, "anything" is possible.