The Wesleyan Javanese Gamelan Ensemble and guest artists, including Indonesian vocalist Peni Candra Rini, will perform a free retrospective concert of compositions by University Professor of Music I.M. Harjito on Friday, Oct. 4 at 8 p.m. in Crowell Concert Hall. They will perform under the direction of the composer and Sumarsam MA ’76, Winslow-Kaplan Professor of Music.  Since 1983, Wesleyan has owned a set of gamelan instruments from Yogyakarta, Indonesia, a donation to the University from Louise Ansberry. The use of some of the instruments in the gamelan date back to the 12th century. Today, the magnificent orchestra includes colorful…