doing up backing track

[bedokkids]

hi,

i have a set of score of the same song.
*bass/guitar/drum.

i need to use this source and do up a realitisc backing track by july.

how should i start first.

right now only have guitar pro on hand
thanks

 

[soft]

http://www.anvilstudio.com/

You can try the above software. It will get the job done. But the 'realistic' part will depends if you manage to find good sound source to use.