Helen & Gorka - Tango/ Waltz / Rumba / Argentine Tango
That's a bit of a grim set of dances to choose from for a semi-final, I feel, no peppy cheerful Latin/CC/Charleston to contrast against a romantic ballroom or moody tango.
I'm presuming it'll be Waltz plus something else, but Rumba is so low-energy, and never goes down very well with the voting public. Plus Argentine Tango can be a show-stealer, but only if it's done well, by a person who can throw themselves into it with sexy abandon, and is Helen that person?