Of the plethora of events accompanying the Walker Art Center’s “Merce Cunningham: Common Time” exhibition, seeing the choreographer’s actual work on stage, in live performance, sits at the top of the list. While Cunningham’s company ceased to exist on December 31, 2011, the French troupe CCN-Ballet de Lorraine (directed since July 2011 by Petter Jacobsson) has acquired and will perform two signature Cunningham works. Cunningham choreographed “Sounddance” in 1975, funneling the lightning-quick dancers through a tent-like opening embedded in the stage decor as David Tudor’s electronic score thunders on. “Fabrications,” which the Walker commissioned in 1987, was constructed from 64 movement phrases that correspond to the 64 hexagrams in the I Ching. Also on the program is a new ballet by Cecilia Bengolea and François Chaignaud (part of Trajal Harrell’s Mimosa at Out There 2013).