Tyraniking, no they can't, but if you've completed Tom Foolery's quest that involves you having a level 40 minstrel, you get a book that teaches Gritty Ditty, which you can put in a character's inventory and they can use the ability of the same name.
It costs 14 MP and has the same effect as Oomphle (all allies' attack are augmented by 1 stage).