Someone needs to change the Wikipedia article on dear Wallingford (1885-1961). Listed among his attributes is this: "He is noted for his use of Arnold Schoenberg's twelve-tone technique [...] but he did not use it in all his compositions." That's like, "Sure, I've been to McDonald's, but I don't eat there all the time." Seriously, someone who has a good grasp on Wallingford should, at the very least, attempt a fitting biographical note.
Anyway, here's a dandy--the first and second movements of his Concerto for Piano and Wind Quintet, Opus 53, written in 1953.
Thanks to Wellesz for making this available.