One of the most powerful vocal groups of the '60s and '70s, the Staple Singers embraced an impressive stylistic diversity while always staying true to their roots in gospel harmonies. Led by Roebuck "Pops" Staples, the quartet first rose to stardom in the gospel music community before detouring into folk and a socially conscious gospel and R&B hybrid, then enjoying their greatest success with a handful of soul music hits for Stax Records in the '70s. Throughout their evolution, the constants in their work were the rich blend of their vocals, delivered with a churchy mix of joy and restraint, Roebuck's subtle but emphatic guitar textures, and in the Stax era, the glorious lead vocals of Mavis Staples.