Songs in Bollywood movies are generally pre-recorded by playback singers, with the actors lip synching the words to the song on-screen. If we talk about the most quality singers or you can say notable singers of Bollywood then some names which comes in our mind are K. L. Saigal, Lata Mangeshkar, Asha Bhosle, Mukesh, Mohammed Rafi, Kishore Kumar, Kumar Sanu, Udit Narayan,Alka Yagnik, Sonu Nigam etc.
Music is always an integral part of Bollywood movies, even one catchy song that may be woven into the script can make a simple bollywood movie to a blockbuster one. In fact, in India, the sound track is released before the movie, so that everyone is humming the song as they enter the theatres. And actually there are many cases when the music outsells the movie.
Bollywood Songs typically comment on the action taking place in the movie, in several ways. Sometimes, a song is worked into the plot, so that a character has a reason to sing and also a song is an externalisation of a character’s thoughts, or presages an event that has not occurred yet in the plot of the movie.