Quick crossword No 340

A nice, satisfying quick solve this. Simple clues, with clear constructions. I think 14a should be (2,3,8) btw. 17a an example of a perfectly written clue. 12a nice too. 15d also. 18d is just about cryptic... but fine. Initially didn't think "everybody" was needed in 19a but given the nature of the dance, I get it now! Enjoyed it a lot - a smooth fill, without anything too tricksy, and nothing I had to look up to check the parsing. Thanks, Goose. Will definitely solve more :-)

This was really enjoyable! My only gripe is describing mathematicians as 3D. One thing they rarely do is add things up. Perhaps bookkeepers or something might be more accurate.

Thoroughly enjoyed this. Just at my level, too. Thanks :)