Just after 4 p.m., the rail-thin Jandek - clad in all black from his Panama hat to his dress shoes - bassist Keith Vivens and drummer Tyson Sheth nonchalantly walked onstage. "Yall in for a wild time tonight," Vivens said, and he was right. Instantaneously, the trio launched into a prodigious jam like George Clinton and Parlaiment-Funkadelic might have in 1975. Vivens' gelatinous five-note bass figure took care of the melody, Jandek's astringent blues guitar filled in the accents and Sheth's cucumber-cool drumming kept things moving forward. It was off the cuff and in the pocket, and just kept going... and going... and going...