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In page Ernie Fields:

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From the late 1920s, he led a band called the Royal Entertainers, and eventually began touring more widely, and recording. Supported by Bob Wills, Fields' band became the first African-American band to play at the landmark Cain's Ballroom in Tulsa.[3] In 1939, he was invited to New York by John Hammond to record for the Vocalion label, and began to tour nationally.[2] He did not become a star, but continued to work steadily, recording for smaller labels, and gradually transforming his sound through a smaller band and a repertoire shift from big band, swing to R&B. During World War II, he entertained troops both at home and abroad.[2]