Christmas comes early for those of who like the cars that go boom and the tubas that go "buup," when Tubachristmas performs at the Southgate Mall. If this needs to be explained, you aren't ready for the awesome power that is tuba power. Southgate Mall Clock Court. 7–8:30 PM. Free. If you're a tubist who wants to play contact Gary at 728-2403 ext. 7041.