KINA GRANNIS HOMETOWN: Mission Viejo, Calif. INFLUENCES: Jason Mraz, Alanis Morissette, Vertical Horizon ALBUM: Stairwells, out now WEBSITE: kinagrannis.com In 2007, Kina Grannis decided to upload her performance of her song “Message From Your Heart” to YouTube in hopes of winning a contest. Win it she did, earning the clip a televised airing during the Super Bowl—and an internet following that has since grown into the millions. “One of...