A couple of years ago, the Knudsen Brothers made a huge impression as one of the acts in an edition of "V -- The Ultimate Variety Show" at the Tropicana.
During the 10 or so minutes allotted, the sextet wowed the audience (and this critic) with its unique act combining wonderful a capella harmonies with the brothers' ability to accurately recreate the sounds of such instruments as drums, bass and trumpet.
....The first couple of times he does his "human beat-box" riff by approximating with astounding accuracy the sound of various percussion instruments, the effect is nothing short of astounding. But by the fourth or fifth song, the astonishment has turned to tedium, and you realize why most acts use actual musicians playing real instruments.
