Jethro Tull, Friday, November 11, Oakland, California, Paramount Theatre.

Is there a more beautiful picture in all of rock & roll than flutist Ian Anderson, posing in a one-legged, foot-on-calf stand while tearing it up on the flute? The flute: In most hands, it's a utility instrument. In Anderson's hands, it's a mighty piece of steel. Know what it is? Foot position. Without a sturdy center, he's falling straight over. Fingers can't fly if he's unbalanced. Before Jimmy Page takes the violin bow to the Les Paul, he better have a consistent stance.