[singer A] aaaaaaauuuuu oooooouuuuuu uuuuuooooooo aaaaauuuuoooo uauauao oaoaoau uauauao oaoaoau aaaaaaaaaaaa oo oo aaaaaaaaaaaa oa oa ooooooooooo ua uo uoaoaouoaouoa a a a [transition] [singer B] aaaaaaauuuuu oooooouuuuuu uuuuuooooooo aaaaauuuuoooo uauauao oaoaoau uauauao oaoaoau aaaaaaaaaaaa oo oo aaaaaaaaaaaa oa oa ooooooooooo ua uo uoaoaouoaouoa a a a
