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In page Women in music:

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Despite this situation, women have been taking on the challenge since the 1940s. Mary Shipman Howard was an engineer in New York City in the 1940s, and Lillian McMurry a record producer and founder of Trumpet Records in the 1950s. One of the first women to produce, engineer, arrange, and promote music on her own rock and roll music label was Cordell Jackson (1923–2004), who founded the Moon Records label in Memphis in 1956 and on the label began releasing and promoting singles she recorded in her home studio, serving as engineer, producer, and arranger. Ethel Gabriel had a 40-year career with RCA and was the first major label record producer.[citation needed]