Although Presley never officially recorded for Sun again, he was caught on tape during an impromptu jamming session on December 4, 1956. Presley had arrived during a Carl Perkins recording session, which also featured a young Jerry Lee Lewis on piano, and a new artist named Johnny Cash watching on. During a break in recording, Presley sat at the piano and began to sing along with Perkins, Lewis and Cash. Phillips kept his tape recorder running, and, seeing an opportunity to promote another of his new acts, he arranged for a reporter to cover the event. The recordings would eventually be known as "The Million Dollar Quartet".