Here in the UK demand is changing in my view, from live play covers with a singer to absolute original sound covers with singer.
As a result increasingly I'm sadly having to use midis with a female singer and then provide DJ disco activity to follow that.
Even at that, which is therefore all provided by us as a duo, the business doesn't come charging through the door and I think that has a lot to do with a recent change in the premises music licensing laws in the UK which no longer allow '2 in a bar' no license required.
Roger M