Hosts Bob Boilen and Robin Hilton share their favorite songs of the week, including premieres from Elf Power and Big Thief, plus new music from The Walkmen's Walter Martin, Son Lux and more: 1. Elf Power: "Watery Shreds," 2. Big Thief: "Mythological Beauty," 3. Walter Martin: "Hey Matt," 4. Scout Pare-Phillips: "Door Left Open," 5. Lydia Ainsworth: "WLCM," 6. Public Service Broadcasting, "Progress," 7. "Ryan Lott/Son Lux: "The Drowning Trough," 8. Diet Cig: "Sixteen"