Kalmuchyn hails from Khmelnytskyi, Ukraine in the historic region of Podolia, where he began singing with the Children's Music School. He eventually became the lead singer of the "Podilski Solovyi” (Podillya Nightingales) children's chorus.
In May 2010, at the age of 17, he made his solo recital debut with the Khmelnytskyi Regional Philharmonic Society. That same year, he became a first-year student of voice at the Lviv National Musical Academy. He won the Theodore Teren-Yuskiw Young Singers Competition and the Grand Prix of the competition "Art of the XXI century."
You can watch his semi-final performance at the Mirjam Helim International Singing Competition HERE. He sings Sibelius' Svarta rosor, a Richard Strauss set (Zueignung, Nichts, Die Nacht, Die Georgine, Geduld, Die Verschwiegenen, Die Zeitlose and Allerseelen), as well as Bellini's Or dove fuggo io mai...Ah, per sempre io ti perdei from I Puritani.