Here, time of four faces (weight cardboard vynile my first edition, the grain of the picture, the cut import unearthed in London) music is invented, synthesizing music rising from the sixties and announce what some rock more years will promise better: blues (the voice of Gregg), country (phrasing Dickey Betts), Rock and Jazz (served by unt rhythmic rio never equaled in the area, the bass Oakley flitting between fills in two gifted drummers distilling flexible and powerful grooves at a time, sometimes playing in unison) and then of course the greatest slide guitar player of all time, the decisive influence which innerva play all bluesman come, guitarist who only then can push Clapton to be his finest recording, "Layla" when both played in Derek and the Dominos, one that ignites some Aretha Franklin records of its bright and warm game straight from the deep south: Duane Allman. The "Statesboro Blues" which opens the festival immediately said we are going: straight to the top. And we do not come down again: the theme from country and jazz "In memory of Elizabeth Reed" is a marvel of invitivité which owes more to Miles and Coltrane rock at the time. Fusion well before the time the music of the deep America, as The Band will do so in a completely different register, where white and black traverse all the sound space they create together on stage in time of improvisation . Resolutely blues and rock in places this disc burned, emits warmth and lyrical joy of play seldom reached. It is customary to see in this record one of the greatest live albums of rock history. Probably, but not just because the versions heard here are exceptional, it is mainly because it reveals the improvised rock he could be no better. An album of warmth and exemplary energy where emotion flows into the phrasing of the guitars (two Les Paul, of course!) And the veiled strength chant.Indispensable to find out what was once the rock music: a crossroads, a meeting, an event which means either there at the Fillmore East.