Why does Bollywood remix so many classic songs?

This is the reason why it was done in the 2000s, most of us stumbled on as well as interpreted Chor Aanchal Kishore Kumar and Asha Bhosale, Bombay Vikings. This leads us to Kaanta Laga, never ever cross, Pardesia and so on, along with improvement, suffering more than a dozen Bollywood classic versions.

Fortunately or unfortunately, the same trend has returned. Recently many Bollywood movies have classic Indian and Pakistani songs.
but why? Why do so many musicians return to the year material and will destroy some of the best music performed by us? Is there a lack of originality now?
The interesting thing is that these musicians, many of whom (maybe themselves feel better in terms of theft of ideas) tend to change some of the lyrics of the song.

"I do not understand why they changed the lyrics, because at the end of the day, people just listen to the very popular Mukhda (bridge). You have to recreate the music with a modern sound, which is good, then I However, like changing the chorus to two songs! "Singer Shibani Kashyap
Aishwarya Rai Bachchan's recent playback singer Sunidhi Chauhan plays Fanney Khan Mohabbat Noorjahan Publications, "You should only keep one line, while the rest is new, you can do the original songs well. It's not here, no, it's a complex feeling.

Sunidhi said: "We give the original music to the audience, I will be more happy, because it will never get like the recognition, the basics have been found in this way, we are also new faces, which unfortunately can create original raga Trying to get discouraged, all mixes do the same sound. Therefore, I am happy to recreate the song, but it should be done in the right way and with the right taste. "