It almost always falls to the piano player to get the band from key to key. The main goal is to make it unnoticeable, or in other words, smooth. Here are a few things that have helped me over the years.
1. If you can, try and put the worship set together in a way that makes changing keys easier. Move to keys that are next to each other in the circle of 5ths. Move to a key that’s part of the current scale. Adjust songs to be all in the same key if possible. If you are going from the key of C to F, just move to the F chord and stay there. After enough time F will be established at the new key.
2. Find a common note to hold out to make a smooth transition from one key to the other. If you were going from the key of C to E, you could play a C chord, then hold out the E note alone, then slowly add in the other notes of an E chord.
3. Avoid using the “5 chord” of the new key…unless you want to make a statement that you are changing keys.
OTHER IDEAS/WAYS??? Add them in the comments below!