Mihael Mikluš started singing with the Glaska choir in Zgornja Polskava during his high school years, and later he joined the Ptuj Octet. At the 2nd Gymnasium in Maribor, he was a part of the English Student Theatre group, where he contributed to the creation of musical performances for three seasons. He then became a choir conductor for the projects Boy from the Jungle and Romeo & Juliet. In 2003, he joined the opera choir of the Slovene National Theatre Maribor, where in addition to choir activities, he also took on several minor roles, such as Fiorello (The Barber of Seville), the Main Black Mask (The Black Masks), Harry (My Fair Lady), Mr. Hartley (Titanic), Bello (La fanciulla del West), and others.