April 15, 2012 9:26 PM

Vibraphonist Stefon Harris’ concert at the Gem full of delight and surprise

Spontaneity, versatility and virtuosity are the qualities of a great jazz artist. That’s what Stefon Harris and Blackout brought to the Gem Theater on Friday night for the Jammin’ at the Gem series. The high-velocity performance was a lesson in creativity.

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