Slow blues is not a separate genre so much as a tempo‑and‑feel designation within the broader blues tradition: it describes any blues tune played at a deliberately unhurried pace (typically around 60–80 beats per minute) that foregrounds emotional expression over rhythmic drive. Structurally most slow blues remain built on the classic 12‑bar I‑IV‑V progression in 4/4 time, employ the characteristic “blue” notes (flattened 3rds, 5ths, and 7ths), and often use a sparse, “space‑filled” groove to spotlight plaintive vocals, lyrical guitar or piano fills, and soulful harmonica or horn solos. The archetype of the form is Johnny Moore’s Three Blazers’ 1945 hit “Driftin’ Blues,” which helped define postwar West Coast blues by pairing Charles Brown’s smooth, melancholic singing and piano over a relaxed, echo‑laden backing band