TDA alumna Patty zings in from Hawaii with this alphabet-soup update:
"Call me nerdy with a little extra time on my hands (not really), but I was on the Acronym Finder site looking up something and decided to look up TDA. The band wasn't listed so I submitted it and they added it! You're official now."
It's true. "TDA" now stands for "Those Darn Accordions." (And "The Dark Arts." And "Toonami Digital Arsenal.")