In 1957, I sat in the audience of the "Women's Centuary Club," on Capital Hill, in Seattle, Washington. The event was a concert by Earl Robinson. The last half of the concert, he performed the entire Folk Opera "Sandhog," which he had just composed. He sat at the piano and sang all the parts, including the sopranos.

The first half of the concert, he sang songs he had composed, such as "What Is America To Me.' And he also sang "The Ink Is Black." I hope this helps. Bob(deckman)Nelson