Pritam at GIMA live 2015 - YouTube

One of my favorites for many years now. Collaboration of Pritam and a bunch of up and coming playback singers in India (at the time). Each of them have such a different style, but their voices melt into one beautiful, powerful melody when they sing together. The video is broken into three segments, each getting progressively more "energetic" and adds on a new element like more instruments.