What began as a Thanksgiving tradition five years ago for NPR host Ari Shapiro is now a recurring segment on All Things Considered. Play It Forward is a musical chain of gratitude.Shapiro starts the chain with an artist he's thankful for, and then that musician chooses someone they're thankful for, and it continues onward with each artist choosing the next link in the chain. This episode features interviews with John Mayer, Leikeli47, Indigo Girls and Kae Tempest. Listen to all the Play It Forward interviews here. In participating regions, you'll also hear a local news segment that will help you make sense of what's going on in your community.Email us at considerthis@npr.org.