Andy Palmer has made gritty folk music as a solo artist and with the band Grub Street Writer, while also maintaining a career as a public defender. The Denver singer-songwriter in May released his latest album, "The Switch." The record explores themes of religion and social justice. ​Andy Palmer and his band played four songs from "The Switch" in the CPR Performance Studio. Palmer also spoke with Alicia Bruce Mitchell about how his career has shaped his music, his success in a recent songwriter's competition and his ode to abolitionist Harriet Tubman.