It had been known among musicians since he was first heard in California in the early 1960s that Joe Pass was a remarkable guitarist. But not until his first solo album, Virtuoso, for Pablo in 1973, did Pass's career begin its dramatic climb. This concert from the Montreux Jazz Festival of 1977 finds him in the unaccompanied role that established him as a jazz star of the first magnitude. The program is dominated by blues, a discipline in which Pass has been known to modestly claim no special proficiency. His performance, however, makes it clear that he is a master not only of his instrument but of the simplicity and complexity of the blues.