Reduplicated, as
“walla, int. and n.” OED Online, Oxford University Press, March 2019, www.oed.com/view/Entry/69216319. Accessed 11 March 2019.walla walla , etc.: used by actors to represent the indistinct murmuring noise of a crowd. Cf. rhubarb n. 4a.
Daylight savings sucks.