Da, DA, dA and other variants may refer to:
https://en.wikipedia.org/wiki/DA
Da Daa Dadada Daaaaa Me Dark Force Laser
da daaaaa, dadada daaaaa da, dadadadaaaaaaaa daaaa, dadada daaaaaaaaa ! ♪
"You can't give up hope just because it is hopeless! You gotta hope even more, and cover your ears, and go: "Blah blah blah blah blah blah blah blah!""
Soon...
Da Daa Dadada Daaaaa Me Dark Force Laser
da daaaaa, dadada daaaaa da, dadadadaaaaaaaa daaaa, dadada daaaaaaaaa ! ♪