Where words fail, music speaks. Music expresses that which can not be said. The greatest respect an artist can pay for music is to give it life. We have witnessed many singers and amongst these, there are few singers who have devoted their lives to singing. Hindi songs have evolved a lot in the past five decades. The legends of music from Pandit Ravi Shankar (Sitar Virtuosi) to Hariprasad Chaurasia (Flute player), Ustad Bismillah Khan (Shehnai player) and MS Subbulakshmi (Carnatic singer) have enthralled us. But here is the list of four singers who have taken Bollywood music to another level.