Does any of you happen to know what BastiGHG uses to insert the dances into Minecraft, and whether everyone can see these dances?
Basti GHG uses the Badlion client
Basti uses the Badlion client. You can only use these dances if you buy them for real money. And you can only see other Badlion Client users.
However, I find the Labymod much better than the Badlion Client. You can see comparisons on YouTube.
Badlion client is called the answer (is not free)