By — Rebecca Jacobson, Inside Energy Rebecca Jacobson, Inside Energy Leave your feedback Share Copy URL https://www.pbs.org/newshour/show/homeless-musicians-perform-smile-rockygrass-music-festival Email Facebook Twitter LinkedIn Pinterest Tumblr Share on Facebook Share on Twitter Watch Watch the Full Episode PBS NewsHour from Jul 31, 2014 By — Rebecca Jacobson, Inside Energy Rebecca Jacobson, Inside Energy @rebeccajacobson