Cassette case from the Blues Brothers movie soundtrack, 4 x 4, signed in blue ballpoint on the inside, “Stay cool, John Belushi,” and signed and inscribed “Joe, You’re the backbone of our international status. Many thanks, Dan Aykroyd ‘81, Elwood” Encapsulated in a plastic PSA/DNA authentication holder. In fine condition, with a bit of trivial toning along the two horizontal folds, both of which unobtrusively pass through Belushi’s signature. Authentic signed items pertaining directly to the Blues Brothers are seldom encountered and extremely desirable. RRAuction COA.