I personally think that the fughetta tag is completely unnecessary and that we can do with just the fugue tag. Should we get rid of the fughetta tag?
Getting rid of it and replacing it with fugue seems sensible to me. Tags that are too specific aren't very useful; There don't seem to be many (any?) other fughetta questions waiting to be tagged with this.
Since the votes seem to indicate that the community is in agreement with you, and no dissenting opinions have been offered here, I removed the fughetta tag from the only answer which had that tag, and replaced it with the fugue tag. The tag was then deleted during the nightly system cleaning since it is no longer used on any questions. So, the fughetta tag is gone, for now.