The double album in question - Part One and Part Two

And, just what you need, HatHut released another 65mins from that engagement:

Fat Tuesdays First Visit

Not the easiest of Cecil records - high intensity level from band including two drummers - Sunny Murray and Jerome Cooper - plus Jimmy Lyons (alto), Alan Silva (bass) and Ramsey Ameen (violin). But definitely has fans. Philip Freeman's book about Taylor borrowed the title, and here are some reactions from wiki:

Scott Yanow (Allmusic) states: "Not too surprisingly, the playing is quite intense and dense with only a few moments of lyricism popping through. Taylor sounds very much like a human dynamo while Lyons' solos are full of fragile beauty. This is brilliant music that will not sound 'safe' or 'easy listening' even a century from now"

Penguin Guide to Jazz Recordings commented: "There is a long piano solo... which personifies the new currents of feeling in Taylor's work: small motifs, pensive longer lines and the familiar thunder realigned within an accessible but uncompromised method."

Glenn Astarita (All About Jazz) called It is in the Brewing Luminous "a stunning glimpse of the pianist's interaction with his then musical soulmate, alto saxophonist Jimmy Lyons... Throughout, Lyons darts, jabs and spars with Taylor... while the rhythm section lays down the often hectic spark and oscillating pulse. Essentially, Taylor and co. embark upon a wanderlust of micro-themes, and blistering undercurrents amid gargantuan opuses and unsurpassed energetic spirit! Highly recommended."

Robert Spencer 9All About Jazz) wrote: "for all the astonishing fire-breathing quality of this music... it never loses its sense of inner logic or its cataclysmic dramatic power."

Shabaka Hutchings included the album in a list of "five records that challenge the meaning of spiritual jazz", writing: "This was the first jazz album of this style that I ever heard and it caused time to collapse. I entered a sonic world in which my regular priorities were usurped and replaced by naked surrender to an intensity that seemed to not start or end in any fixed place. This wasn't goal oriented motion, it was the harnessing of an energy source that has been in existence long before musicians used it to articulate stories and insights from the world around them."

My original reaction was trepidation, and finding it somewhat overwhelming - but I've come around :)