The historical significance of this archival live recording is signaled in the subtitle, "Signe's Farewell," as this performance by Jefferson Airplane at the Fillmore Auditorium in San Francisco on October 15, 1966, marks the final one for the band's original "girl singer" (as Marty Balin puts it), Signe Anderson. It is also the first concert recording from the Airplane's early days to see release, and it gives a better sense of the group than its then-recently issued debut LP, Jefferson Airplane Takes Off. That studio recording gave the impression of a somewhat lightweight folk-rock ensemble, but from the opening nine-minute instrumental "Jam," the live Airplane heard here is much closer to the style of the other San Francisco bands playing the city's ballrooms around the same time.