Most 20-year-olds don't play over 15 instruments or write three songs per week. Nor have they traveled and lived all over the United States. But Sacramento musician Autumn Sky didn't grow up in a so-called "normal" household. Having played hundreds of shows, the ambitious Sky is on the rise. Sky (she uses her middle name instead of her last name, Hall) was born in Paradise, Calif. She and her family lived out of a Volkswagen Beetle near Puget Sound in Washington and spent time in Oregon and Wisconson before settling in Sacramento. She also recalled living in a log cabin in Mendocino as part of a nudist colony. "There is a whole [photo] album that my parents have and it's all these babi