WHEN Khemchand Prakash passed away, he left behind an impoverished widow and the haunting Aayega Aanewala . It was a melody that made musical history, remembered and replayed by buffs of a bygone era. His family, having fallen on hard days, was meanwhile forgotten. Last year, however, Mrs Prakash found herself richer by Rs 16,000. Justifiably so. The Indian Performing Rights Society (IPRS) has been given a shot in the arm with the amendment of the 1957 Copyright Act and a certificate of approval from the Union Government. This in turn, has given a new lease of life to music directors and their kin.