What nickname is this American gospel singer, for whom Thomas A. Dorsey originally wrote the 1937 song "Peace in the Valley", referred to as?
Peace in the Valley: "Peace in the Valley" is a 1937 song written by Thomas A. Dorsey, originally for Mahalia Jackson. Mahalia Jackson: Mahalia Jackson ( ; October 26, 1911 – January 27, 1972) was an American gospel singer. Mahalia Jackson:  Possessing a powerful contralto voice, she was referred to as "The Queen of Gospel".
The Queen of Gospel