FEATURED ALBUM: HIP-HOP AND JAZZ ARE IMPROVISATORY BY NATURE and rooted in equal parts genius and pain. The two were paired to great effect in Nas’ Illmatic and A Tribe Called Quest’s The Low End Theory, but there hasn’t been a new entry into the canon until now. Sour Soul (Lex Records) is the supremely great collaboration between Wu-Tang Clan member Ghostface Killah and the precocious Toronto jazz threesome BadBadNotGood. Who knew this unlikely pairing were made for each other? Sour Soul is a spaghetti western soundtrack with Tony Starks as the grisly protagonist, reminiscent of Miles Davis’ score for Louis Malle’s film noir Elevator to the Gallows. It’s a record on which Ghostface can spit out dialogue such as “Cry me a river, bitch/Just want my cut of the money” to an aching string section. The sour world of bitches, pimps, death and ecstasy ...