The Electric Company archive has audio ("Arthur J. Crank sings 'S On The End'," "Easy Reader," "Greedy Greg Grabbed," "The HEY YOU GUYS! Song," "Monolith," etc) and video ("There's A Banana In Your Ear!," "I Am Cute" with Mel Brooks, and "Silhouette Syllables" with Morgan Freeman) from one of the all-time great musical kids' shows of the 1970.
(Thanks, Jeremy!)