The University of Wyoming Symphony Orchestra will premiere a new composition Thursday, October 25 at 7:30p.m. at UW’s Buchanan Center for the Performing Arts. The performance of Gwyneth Walker’s Earth and Sky will include multimedia elements including projections and narrators. The triple concerto will feature the Musica Harmonia string trio with the UW Symphony. As Walker told Wyoming Public Radio’s London Homer-Wambeam, Musica Harmonia commissioned the piece.