Just want to say thanks to everyone who lists titles and authors here. Let's keep adding to it!
Ania, I plan to get The Mozart Season for DD12 who plays violin. Thanks for the recommendation.
Some books DD12 recently read and enjoyed:
The Devil's Arithmetic, by Jane Yolen (sad and powerful)
Julie of the Wolves, by Jean Craighead George
The Goose Girl & Enna Burning, both by Shannon Hale
The Two Princesses of Bamarre, by Gail Carson Levine
Elsewhere* by Gabrielle Zevin
*Elsewhere is interesting for its concept of life after death. A 15-year-old girl dies and goes to "Elsewhere," a place similar to Earth, where people age backward (from whatever age they were when they died on Earth) until they become babies and are reborn again on Earth. DD12 really liked this one. (Parents might want to read this one first for content, as it is geared towards more of a teenage/young adult audience.)