Soul music didn’t suddenly appear in the 1960s. Its roots were a product of decades in church pews, blues clubs, juke joints and beyond. This week, Deeper Roots begins a special two-part journey excavating the familiar classics to explore the fertile ground from which soul music grew. In this first of two episodes, we’ll hear the gospel quartets, blues shouters, rhythm & blues singers and vocal groups who provided the language: call and response, soaring falsettos, sanctified piano, hard backbeats and a delivery that could turn a song into testimony. From The Soul Stirrers, Sister Rosetta Tharpe, and the Five Blind Boys to the 5 Royales, Clyde McPhatter, and Little Willie John we’ll help connect the dots. These are the sounds where Saturday night meets Sunday morning—and of gospel fervor, blues feeling and rhythm & blues, all coming together to lay the foundation for something new. Next week, we’ll follow those roots into the first flowering of soul itself.