"1930Z"^^ . . . "American musician" . "Martin, Roberta"@en . . . . "Roberta Evelyn Martin (February 12, 1907 \u2013 January 18, 1969) was an American gospel composer, singer, pianist, arranger and choral organizer, helped launch the careers of many other gospel artists through her group, The Roberta Martin Singers."@en . . "solo_singer" . "1969-01-18Z"^^ . "1907-02-12Z"^^ . . "Roberta Martin"@en . "1969Z"^^ . . . "1930Z"^^ . . "Roberta Evelyn Martin"@en . "1907Z"^^ . .