Hauschka, Samuli Kosminen and Jeffrey Zeigler

Performing in advance of a bigger affair to be mounted by the River to River Festival and Original Music Workshop on July 11, the newly united improvising trio of composer-pianist Hauschka, percussionist Samuli Kosminen and cellist Jeffrey Zeigler (newly late of the Kronos Quartet) floats gingerly out into untested waters for an intimate test cruise.