(High-pitched sounds) (High-pitched sounds) (Hooting) MB: So what he's doing is he's changing the shape and the length of the vibrating air column using rhythmic contractions of all the muscles to generate all those sounds that you're hearing.
(Sons agudos) (Sons agudos) (Imitando sirene) MB: Ele está mudando a forma e o comprimento da coluna de ar vibrante usando contrações rítmicas de todos os músculos para gerar os sons que estão ouvindo.