Charles May and Annette May Thomas are an American brother-sister duo known for their contributions to the gospel and soul genres. Their unique blend of gospel roots with R&B elements, showcased in their 1973 album "Songs Our Father Used to Sing", set them apart in the music industry. Charles May, a noted arranger and producer, and Annette's powerful vocals, provided a distinctive sound that influenced the gospel music of their era. Despite their limited discography, their musical impact has been lasting with the album often cited as a landmark in gospel music.