“Detroit-via-D.C. legend Theo Parrish is well-known for his crate-digging curatorial skills, so his latest project, Black Jazz Signature, is a perfect match for the master selector. The record finds Parrish selecting and mixing a collection of rare jazz and funk platters originally released on the Black Jazz label from 1971 to 1976. (The mix was recorded straight to vinyl, in case you were wonderin”