[2] While in high school and college, he also studied drumset privately under Tommy Igoe, Nick Scheuble, Joe Bergamini and John Riley.

[3] He was accepted at the graduate school of New York University to study jazz drumset performance but he did not attend and decided to pursue a professional career as a musician instead.

"[5] As a session drummer he plays in a variety of styles including pop, rock, jazz, fusion, progressive metal, hip hop, funk, R&B and electronic music.

[7] Other artists and groups with whom he has played or recorded include Latin pop star Thalía, classic rock artists Joe Lynn Turner, Steve Augeri, and Derek St. Holmes; and the prog and metal bands Suspyre, Kayo Dot, Mythodea, and Anuryzm, as well the classical violinist and guitarist The Great Kat.

[10][11] In 2006, Zeleny had also joined Ron Jarzombek and Alex Webster in their Blotted Science project and was the drummer on their 2007 debut recording The Machinations of Dementia.

[4] Under his solo artist persona "DRMAGDN: Cyborg/Drummer DJ" Zeleny simultaneously plays drums while performing EDM originals and live remixes.