Originally Posted by: bunmiadefisayoHow do i do this effectively? How do i transition from one key the other smoothly? The best example i can give (i know most ppl on this site listen to rock) is in Gospel music where they change keys and the change is so smooth and you immediately flow into the new key w/o any problems. I bet there are other examples but a lot of music i listen is gospel, R&B and jazz.

It has alot to do with the arrangment. Aside from modulation and stuff like that. If the arrangment allows it, a key change from C Major to C# Major (or whatever it would be) should sound natural, at least, if not cool.