(3) Production Chris Blackwell – producer (1, 2, 3, 5) Steve Winwood – producer (1, 2, 3, 5) Guy Stevens – producer (4, 6) Brian Humphries – engineer Andy Johns – engineer Lee Hulko – mastering Mike Sida – album design Richard Polak – photography Charts References Notes External links Official press release for John Barleycorn Must Die 2011 reissue Traffic – John Barleycorn Must Die (1970) album releases & credits at Discogs.com Traffic (band) albums 1970 albums Island Records albums United Artists Records albums Polydor Records albums Albums produced by Chris Blackwell Albums produced by Steve Winwood Albums produced by Guy Stevens Albums recorded at Olympic Sound Studios