Tennessee bluegrass player Bradley Barstow holds not just the key to the cure for ukulele-player Leilani Mahuiki's sick daughter, but to Leilani's heart. TWO NOTES, DISCORDANT Thirty-year-old musician Leilani Mahuiki is in Tennessee to find Joe Barstow, the birth father whose bone marrow might save her daughter's life. She finds Bradley, too, Joe's adopted son. Against all odds, she and Bradley make wonderful music together, she on the ukulele, he...