The Four Vagabonds were radio stars of the early and mid 1940s. As 50's vocal harmony lovers will tell you, the Four Vagabonds are grandfathers of R&B harmony. Their 1946 Apollo recording sessions links them to R&B recording history. Surprisingly, many educated black music fans are completely unaware of the Vagabonds. They sang popular songs, which some blues-oriented listeners may find challenging. Regardless of the repertoire, the Four Vagabonds were expert practitioners of improvisational harmony singing.