Tobias summarizes a topic very well. :)|
|Date:||September 2nd, 2007 09:32 pm (UTC)|| |
You can sing "Happy Birthday", but not publicly perform it; that's a fairly major distinction. (This is why some restaurants have their own birthday songs, incidentally.)
You could also hum it, since the music was originally published as "Good Morning to All" in 1893 and is therefore out of copyright.