First appeared in www.scroll.in on June 27, 2015. This week, our series on the harmonium, comes to a close with a focus on musicians from Karnataka and Bengal. Looking back at the tracks featured over the past three weeks, one cannot but be amazed by the diversity of technique and presentation that harmonium players have evolved over the past century and more.  Recorded music is evidence enough for those who continue to condemn the instrument for its limitations. Indeed, performers have candidly