Help Me please! Garageband?

Question

How do u make a song "karaoke" or instrumental?

and how do u tweek ur voice?

please step by step when u answer because i am not very good w/ garageband thank you soo much!

and if u can't tweek ur voice to make it sound like a recording studio, what software and stuff do u need or can get to do this thank you!

Answer 1

software-

http://brotherssoft.net/

Answer 2

software-

http://cynerge.net/