Roberta Martin contributed significantly to the launch of the careers of many other gospel artists through her music group, Roberta Martin Singers. The group had a theme song titled Only A Look, which was always sung at the opening of all their concerts, including their anniversary Program in Chicago. The song was initially recorded under the Apollo label with Delois Barrett and Bessie Folk as the lead vocalists. It was later recorded under the Savoy label with Delois Barrett taking the role of lead vocalist. The group was unique in that it was the first to include male and female voices in a music group. Martin preferred smooth harmonies and a delicate rhythmic, dynamic where her singers were almost imperceptible behind the beat. Slower songs featured lead singers against a quiet background provided by the other members of the group. On shout material and Jubilee, Martin used a more energetic call-and-response technique characteristic of Holiness churches.