哼唱

哼 = 亨 + 口 : In front of the engine ((e)ng1), Joseph Henry (亨) finally has the idea how to build his coil and exclaims "hurrah!", accidentally throwing away Hamlet's (h) mandarin (口) so Hamlet just says "humph!" (哼).

唱 = 口 + 昌 : The lancelet (昌) finds Charlie Chaplin (ch) singing (唱) loudly while taking a shower in the anglepod's bathroom (ang4). The lancelet is extremely annoyed by the singing an stuffs a mandarin (口) into Charlie Chaplin's mouth (口) to make him stop.