With a sale of 19 million copies and a reputation as one of rocks greatest albums, it is very easy to overlook Back in Black's faults, and quite simply, this aint no Led Zeppelin 4. The album has neither the astonishing musicianship of "Are You Experienced?" (Jimi Hendrix), the mysticism and inventiveness of "Led Zeppelin" or the heart and soul of "Rocks" (Aerosmith), and it is a wonder that Back in Black deserves to be mentioned among these titles. It has also abandoned many of the things that made their earlier albums great, such as the raw, unpolished sound of the guitars in "Powerage" and "Let There Be Rock",the band on the road tales of "High Voltage", and even the consistency of "Highway to Hell". In short, they have not advanced as musicians or changed their style enough from the previous albums to make it as exciting as it could have been, whereas albums like "Van Halen" prove to be far more inventive and revolutionary despite lacking depth. Despite these complaints, Back in Black is nevertheless a great album because of its playfulness and sense of fun throughout, especially on tracks like "You Shook Me All Night Long" and "Shoot to Thrill". And although the guitars have lost most of their raw appeal, Angus and Malcolm Young still manage to provide more memorable hooks and riffs than before. But what really makes Back In Black a success is AC/DC's never ending dedication to simple, loud and juvenile rock n' roll.