‘Guardians of the Galaxy’ Soundtrack To Be Released On Cassette Tapes October 20, 2014 Say What!? How retro-kitch-useless-awesome is this news!? The film’s ’70s-tastic soundtrack is already out on CD and vinyl, but will be available on cassette tape beginning Nov. 17, according to Billboard. Now if Marvel could release a special walkman edition for christmas that would be even better … With $687 million Guardians of the Galaxy is 2014’s highest grossing film in the U.S. and 3rd Biggest Marvel Movie Ever. No surprises there since this movie is just fantastic! Leave a Reply Cancel Reply Your email address will not be published.CommentName* Email* Website Notify me of follow-up comments by email. Notify me of new posts by email.