"Coplanar 1 + 2" by Guillermo Gregorio was performed by the Elbio Barilari Experience at the University of Chicago at Illinois on November 8, 2011. The University of Illinois at Chicago Department of Theatre and Music presented the concert, which also included performances of "Cosmology" by Elbio Barilari, "Cello Concerto" by Elbio Barilari, and "Madipiece #1" by Guillermo Gregorio. Liliana Wosko (cello), Andrew Royal (violin), Christopher Preissing (flute), Guillermo Gregorio (clarinet), Elbio Barilari (contralto clarinet), Dave Grilly (bass clarinet), Dan Godston (trumpet), Andy Cohn (piano), Paul Giallorenzo (moog), Steven Hashimoto (electric bass).
elbiobarilari.com,
theatreandmusic.aa.uic.edu/musicpages/music-tuesdays-at-1.htm