Matt Costa didn’t launch his music career by conventional means. In fact, the 24-year-old literally fell into the business. In 2003, the Huntington Beach native shattered his leg in a skateboarding accident. With 18 months of rehabilitation looming ahead, Costa picked up a guitar to pass the time. Five years, one crude demo, an independent album and a couple of friends-with-benefits later, Costa has released his second album (Unfamiliar Faces on Jan. 22), well on his way as a rising star in the singer/songwriter world.