ERTHLINGS SHARE DEBUT EP ‘INDIGO’ TODAY FEATURING NEW SINGLE “RETURNING” VIA FUTURE CLASSIC PRAISE FOR ERTHLINGS “both minimal and sophisticated…a 1960s-new wave-indie concoction — a little Zombies, a little Siouxsie and the Banshees, a little Warpaint…” -New York Times “So crisp, so clean,…