Free Songs Download By using Google

Two days back I was searching for some site through wich I can download some good music. Though there are many sites which allows you to download the music free freelly.
But If you want any specific song then it is very deficult to search for the songs. say you wanna download DJ Tiesto tracks, just put the followng code in the google and it will search for you.

intitle:"index.of" "tiesto" "parent directory" "size" "last modified" "description" (wav|mp3|wma|ogg|mp4) -inurl:(asp|jsp|php|html|htm|cf|shtml)

Ejoy your search result direct download the mp3. :)