On Thursday, July 14, 1966, the Fillmore Auditorium hosted an evening booked under someone else's name. "A Pleasure Dome," per jerrybase, was presented by the San Francisco Calliope Company -- the presenter of record on both period lists, though the night sits in the Bill Graham Foundation's own archive -- and its bill, confirmed in the same order by chickenonaunicycle and the Bill Graham Foundation's archive, is one of the strangest and most quietly prophetic of the Fillmore's first year: the Hindustani Jazz Sextet at the top, the Grateful Dead in the middle, and Big Brother and the Holding Company underneath, with Elias Romero's light show over all of it.

Start with the headliner, because nothing about it is generic. The Hindustani Jazz Sextet was the trumpeter Don Ellis's working laboratory with Harihar Rao -- a sitarist and colleague of Ravi Shankar, per jerrybase -- and its project was the systematic fusion of jazz improvisation with North Indian rhythmic cycles. Ellis would become famous within a few years for big-band pieces in impossible time signatures; in 1966 the sextet was the West Coast's most serious working experiment in what jerrybase's annotators point out would only later be called world music. Placing that group above two rock bands on a Fillmore Thursday was a programming statement: the Calliope Company was betting that the dance-hall audience wanted its mind changed, not just its evening filled.

The raga current was already running through the ballrooms -- the Byrds' "Eight Miles High" had put Coltrane-and-Shankar guitar on the radio that spring, and within a year the modal drone would be psychedelia's default setting. What this bill did was cut out the middleman: instead of rock musicians imitating Indian music, the Fillmore got Rao's actual sitar next to Ellis's actual trumpet, with two of the city's loudest young bands sharing the stage. Whether the crossover audience knew what it was hearing is not recorded; that it was offered the real article, on a rock-hall stage, in July 1966, is the fact the page preserves.

The middle of the bill catches the Grateful Dead in a working month at the room -- they would be back the very next night, opening the Jefferson Airplane weekend that the poster catalog numbers BG-17 -- still unsigned, still the neighborhood's band rather than an institution. And at the bottom sits Big Brother and the Holding Company at a hinge in its story: Janis Joplin had joined the band only weeks earlier -- her first appearances with Big Brother had come that June, by the standard accounts. A listener at the Fillmore on July 14 was hearing one of the earliest Fillmore outings of the voice that would define the scene's next two years, third on a card under a jazz sextet.

Elias Romero's name on the lights matters too. Romero was one of the true elders of the liquid-projection art -- a painter who had been developing light shows in the Bay Area years before the ballrooms existed, and from whose workshops and collaborations the scene's celebrated light-show crews descended. A Romero night at the Fillmore is the craft's prehistory visiting the venue that made it an industry.

No numbered poster marks the evening -- the Calliope Company's night sits between BG-16 and BG-17 without a card in Graham's series, and no artifact for it could be verified from here; if a handbill survives, that identification is left to the catalog's keepers. The absence is its own document: the numbered series maps Graham's operation, and the Fillmore's actual life kept overflowing it. One Thursday's overflow put a sitar, the Dead, and the weeks-old Janis Joplin lineup of Big Brother under one roof and called it a pleasure dome. The name -- Coleridge by way of a night's promotion -- was, for once, earned.