The 2007 Hal Leonard Guitar Play-Along Chicago Blues Vol 4 is an instructional DVD featuring various artists and focusing on the blues genre. With a publication name of Guitar Blues Vol 4 and part of the Guitar Play-Along series, this DVD includes 8 complete songs, on-screen tablature, multiple camera angles, and performance tips for guitarists of intermediate level. The DVD is sealed and comes in a unit quantity of 1, making it a valuable resource for musicians looking to improve their blues guitar skills.