London Harmony: Feel the Beat
Abigail suffers from two conditions that allow her to experience the world around her in such a unique manner that she can literally see and feel the music around her.
On a chance meeting at a music repair shop, she meets a tinker, Isabelle, who is unlike anyone she has ever met. Together, they work to get Abi's unique music noticed.
After a near tragedy, they discover that unbeknown to them, she already had.
(London Harmony is a spinoff of the Music of the Soul books.)