They're four brassy guys who all play trombone — and who've set the music world to buzzing. The New York City-based Guidonian Hand trombone collective, consisting of ace musicians Mark Broschinsky, William Lang, James Rogers and Sebastian Vera, is not your average brass quartet. “The sum of these four extraordinary musicians,” one critic enthused, “equals something beyond what the term 'trombone quartet' could muster.” That's because “the Hand,” as its members call themselves, don't just play music — they create it, on the spot, in ways refreshingly original. Whether it's Conrad Winslow's Pinning Music, a rich blend of sounds odd and entrancing that seems to mimic an animated conversation about an exceedingly interesting topic; Galen Brown's Grind, in which eerie trombone whisperings rise and stretch into a ringing meditation played against a monotonous martial beat; or Debussy's Quant J'ai ouy le tambourin, a sonorous blend of renaissance and contemporary styles, the Hand knows no limits. This weekend, they make a rare, one-night-only appearance at the Silverlake Lounge, courtesy of Classical Revolution L.A., that cool series that brings classical music in all forms to bars, dives and other unexpected venues throughout the city. Or, as the great Justin Bieber might say, too swaggy to miss. 2906 W. Sunset Blvd., Silver Lake; Sun., Sept. 22, 6-7 p.m.; free, but donations appreciated. (213) 814-8597,

Sun., Sept. 22, 6-7 p.m., 2013

LA Weekly