Studs interviews Phyl Garland about her book "Sound of Soul." They discuss the history of music and how black music influenced white music. Studs reads a quote from her book where she quoted Lerone Bennett. Garland also reads from her book a few times. They discuss how music changed over time for blacks from spirituals to slave songs to the blues because it was a reflection of their lives. Garland explains how blacks used music to help them through their trials and frustrations.

Studs Terkel interviews blues singer song-writer Janis Joplin. This program discusses the following: Joplin's song "Turtle Blues"; Joplin's idols Bessie Smith and Lead Belly; Joplin's style of singing; Joplin's song writing; the blues; Joplin's interpretation of "Summertime"; and various renditions of the jazz song "Summertime". The following musical excerpts were presented: "Turtle Blues"; "Summertime" (interpreted by Janis Joplin); "Summertime" (interpreted by Mahalia Jackson); "Summertime" (interpreted by Billie Holiday); "Ball and Chain"; "Piece of My Heart"; and "Billie's Blues".