The musician Will Oldham, also known as Bonnie "Prince" Billy, is more than 30 years into his career with no sign of slowing down. With the release of his new album, “The Purple Bird,” Will joins Tom Power to reflect on his life and music. He tells us about the time he met Johnny Cash, how he ended up conducting Cash’s cover of his song “I See a Darkness,” and how that memorable recording session led him to meeting David Ferguson, the producer of his latest record.