In later years, while kept playing, he decided to attend the Copenhagen Jazz Conservatory where the teachers included Peter Danemo, Niels-Henning Ørsted Pedersen, Ed Thigpen, and Aage Tanggard.

During his studies at the conservatory, he met other young musicians, and together they formed an independent record label called ILK Music.

In 2017, he received the prestigioues award Gudmanprisen (together with Alex Riel) He has performed and recorded with many international recording artists such as John Tchicai, Miroslav Vitous, Ellery Eskelin, Tim Berne, Palle Danielsson, Marc Ducret, Anders Jormin, Michael Formanek, Tomasz Stanko, Carsten Dahl, Jesper Zeuthen, Ray Anderson, Alex Riel, Mikko Innanen, and Lotte Anker are among others.

His debut-CD was named one of the "Best Debut Albums of 2007" All About Jazz-New York Best of 2007 New York[5] John Kelman of All About Jazz said in 2004 about Pasborg: Percussionist Stefan Pasborg is a young Dane who has, in the past several years, studied with artists including Joey Baron, Jim Black and Daniel Humair—and given his experience, it is no surprise that his playing is daring, although it sometimes seems barely on the edge of sanity.

But through it all he demonstrates a strong command of the kit; even at its most crazed this is no random bashing.