Emily Gregory, in Madeleine L'Engle's The Young Unicorns (warning: wikipedia entry=spoilers), is a teenaged pianist blinded in a robbery-gone-wrong. The book's a thriller, kind of, set in and around the Cathedral of Saint John the Divine in NYC, but it's also full of L'Engle's characteristic concern with family life. It's the 3rd book in the Austen family series, but I read it before any of the others, and I wasn't lost.

It *does* have a very late-1960s view of Drugs And The Decay Of Urban Society, but it's still rather an innocent book. There's a lot of music written into it, and I really liked that.