I'm thinking this page is going to need a split. The page is only about works dancing around the copyright and not, as the title implies, actual performances of said song.
As more works are finally going to be able to celebrate birthdays in a way that matches up with reality, for example the Happy Birthday Donald short of the new Ducktales, and if nothing else we'll have a lot of newcomers trying to catalogue straight post-2016 instances of the song and getting confused
Maybe we should change "British tropers may be relieved to know that the copyright ends in the UK in 2016" to "European tropers may be relieved to know that the copyright ends in the EU in 2016". At least according to The Other Wiki, copyright expires 70 years after the author's death in the entire EU.
Can you find a video example from the Blaze and the Monster Machines episode "Starla's Wild West Birthday" where they sing "Happy Birthday" to Starla?