Having gone to the Tower Arts Centre last night, I can vouch for the quality of the show. Not rumbustious all out unison singing, but varied and interesting arrangements of Short's songs, with some instrumentation.
Each one is a little different to versions that are normally heard, but that just makes it more entertaining.
Go along to this show, if you can. It may not be all that you expect from shanty singers, but, neither is it a diluted, sanitised experience. I came away refreshed by Short's versions, and, also stimulated to revisit some of the more commonplace shanties.