I don't listen to music when I write, but I do turn on appropriate music when I read portions of my manuscripts back to myself - kind of like adding a soundtrack to help shape mood. ↗
Sometimes I have given my husband a manuscript to read that has turned out to have fantastic rave reviews and he'll tell me it is no good. Well, if I didn't know him as well as I know him I would be terribly depressed. ↗
