The Carpenters built much more than lush, heartfelt hits. Check out the funky groove and popping bass on “Goofus” or the pop opus “Mr. Guder,” buoyed by intricate vocal harmonies that are part baroque, part Beach Boys. A swooning romantic ballad over gliding strings, “Now” is the last song Karen recorded before her death, while “Karen's Theme” is Richard's haunting piano-based instrumental dedicated to his sister's memory.