Emon is nowhere close to Prashant and Amit. Emon is only good for high pitch songs. Prashant has proved he can sing any type of songs classic, folk, pop, slow etc. Amit has good voice but he sings almost the same type of songs whereas Emon is good for Sonu's songs. As good as Rafi and Kishor Kumar, there are no 2 copied singers successful in the market so how does Emon survive? Plus Sonu is not in the same level as Rafi and Kishor.