This incredible vocalist teaches you how to sing two notes at the same time

Vocalist Hub on Instagram: "In 2014, German singer and vocal artist Anna-Maria Hefele captivated the music world with a viral video showcasing polyphonic overtone singing—a remarkable technique that allows her to produce two notes at once. By precisely shaping her mouth, tongue, and throat, she amplifies harmonic overtones above a fundamental pitch, creating the clear, flute-like sounds that have made her a standout figure in the history of experimental singing. Trained at the Mozarteum Universi