For its Spring Semester performance, the Cornell Gamelan Ensemble returns to the atrium of Klarman Hall, whose magnificent acoustics resemble those of the grand pavilions called pendhapa where gamelan is played at Java’s royal palaces. The program features ladrang Siyem, a 1929 piece inspired by the Thai royal anthem, as a way of welcoming Assistant Professor Parkorn Wangpaiboonkit, who joined the music department last fall. Wangpaiboonkit and ensemble director Christopher J. Miller will provide comments to shed light on the historical and musical idiosyncrasies of the original Siamese melody and its thoroughly Javanese adaptation.