That's the thing about keyboard players... other than keytar users, you are static. How many of us move around a lot while we play? I've never seen a picture of you, for instance, doing anything but sitting behind your arranger.

And Gary, sorry, but you really ought to add this caveat to your blanket recommendation of headset mikes - IF you have a trained, experienced, broadcast quality voice with a lifetime of training for evenness, then headsets mikes MIGHT be the best thing for you.

But let's get real, here. How many, on this forum, do you think have one of those..?

Recommending a headset mike to singers trained and experienced on normal mikes, with singing voices of average ability and technique is like handing an F1 car to the average driver... a recipe for disaster!
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An arranger is just a tool. What matters is what you build with it..!