You need a karaoke of the song that you are going to use for recording . For that you need to get the Background music of your song .How to get the background of a song without vocals you can see our previous post .
Using the Audacity now open the karaoke music file.The Sound track gets loaded into the track in the form of wave.

Many of my friends have asked me about how to remove vocals from a song and how that is possible . There are too many softwares now a days for removing the voice from a song. Here i am going to explain about a good vocal removal software that suppress the vocal upto 85% .

Do you need to improve your singing skill then this might be the best way to get your own BGM for any of your favorite song . Now start recording your own voices !! 

To know about Recording and music effects you can see our post on How to Record your own Song

1. You now have to download AV Music Morpher Gold 
2. Once your Download got over you can install and run the music morpher.
3. You will have the trial license ,If u are really in need to use full functionality of this software you make a comment to this post with your mail id ,I will send back you with a license key .
4. Once you complete the installation now you gonna start up with voice removal.