The Nashville-based singer/songwriter duo Sam & Ruby is kicking off their first tour in Knoxville tonight. Sam Brooker and Ruby Amanfu were friends for years before making music together. They come from very different backgrounds, yet discovered they were "musical soul mates". Sam is from Wisconsin, Ruby was born in Ghana, West Africa. He's white, she's black. Sam plays guitar and their voices blend effortlessly. Ruby Amanfu tells WUOT's Ann Lloyd her instrumental skills are relegated to her off-stage life...