Yeah man, any DAW thats available for the Mac OS is all u need.
Just lace your beat, start a new track, and record your tag, copy and paste if needed...mix it in to taste, done.
Ive just heard some creative tags like "tha bizness" and "maestro" joints and was wondering how they created these tags
You could do it yourself using effects or I could do you one, but Im really not up on doing those so much any more.