Video: What does helium do with your voice, a flute or bagpipes? – Rapalje Show #34 Posted on Sunday, der 5. November 2017 by David Myles In dieser Episode der Rapalje Show machen wir einen weiteren Test mit Helium. Continue reading “Video: What does helium do with your voice, a flute or bagpipes? – Rapalje Show #34” →