An earthquake measuring 6.5 on the Richter scale rocked Jakarta last Wednesday. Esther Santoso didn’t feel it, however. The musical notes of Ave Maria, Crucifixus and Der 23 Psalm, causing the walls of Hotel Darmawangsa’s Grand Ballroom in Jakarta to quiver, pinned her to her seat. The classical numbers from the Middle Ages seemed to have brought to life the hypnotic spirit of the composers from the past: Antonio Lotti, Franz Schu