In 1968, during the Polish government’s anti-Jewish campaign, Kowalski was forced to leave Poland before completing his graduation recital. He resumed his studies at Indiana University, where Wroński was also teaching, and worked with Josef Gingold, receiving an artist diploma in 1974. His chamber-music education brought him into contact with William Primrose, Menahem Pressler, János Starker and György Sebők: an intimidatingly distinguished faculty list, even by Indiana University standards of the era, when a stroll down the corridor could feel like a visit to the backstage of Carnegie Hall.
Kowalski did not merely study among these figures- he became their colleague. After joining Indiana University’s faculty in 1975, he served in a succession of appointments before becoming professor of violin in 1991, a position he held until his retirement in 2011. He was also visiting professor at the Tokyo College of Music in 1990–91, and taught at the Royal College of Music in Stockholm from 1994, becoming professor there in 2006.
His international career as a performer included appearances with the Seattle Symphony, St Louis Symphony Orchestra, Copenhagen Symphony, Warsaw Symphony Orchestra, Belgian Radio Orchestra, Seoul Philharmonic and Bochum Symphony Orchestra, among others. From 1977 to 1989 he was a member of Trio European, formed with his brother Jakob and the Belgian pianist Jean-Claude Vanden Eynden. The trio performed extensively across Europe, Asia, Central America and the United States, broadcast on major European radio networks and recorded for Pavane Records.
Still, it was in the teaching studio that Kowalski found his fullest vocation.
Glen Kwok, Executive Director of the International Violin Competition of Indianapolis and a former student, recalls that within Indiana University’s formidable string department, Kowalski was known as “Mr. Fix-It.” Colleagues sent students to him when an essential technical issue had proved stubborn: an unreliable bow arm, a tense right hand, a wayward shift, a sound that would not carry, or any of the small physical habits that can become large artistic obstacles.
The nickname was affectionate, but it described a rare gift. Kowalski could hear the source of a problem beneath its symptoms and then articulate a route out of it. In an era at Indiana University that included such giants as Josef Gingold, Franco Gulli, János Starker, and, in the piano department, Menahem Pressler, György Sebők and Leonard Hokanson, this capacity made Kowalski indispensable. There were players whose effortless command could leave students awestruck; Kowalski could explain, patiently and in detail, how to build such command from the ground up.
“Some of the most gratifying aspects of teaching are to see a student master the technical and interpretive aspects of playing and learn how to concentrate on listening to and inspiring themselves so they can adjust and improve, ultimately becoming working professionals and their own teachers.” – Henryk Kowalski
Glen Kwok remembers being advised by fellow students not to be overly dazzled by prestige when selecting a teacher. “Go straight to Henryk,” they told him. The message was not that Indiana lacked illustrious professors—quite the reverse—but that Kowalski offered something particularly valuable: a rigorous, practical education in the fundamentals of playing. He was the teacher who could take a student from wherever they were and move them onwards.
Kowalski himself took great pride in that task. He did not reserve his energy for the already polished, the conspicuously gifted, or the students most likely to flatter a studio’s reputation. He accepted violinists at widely differing levels and regarded their progress as a personal responsibility. As Kwok recalls, students were given not simply their scheduled weekly lesson but as much teaching as they needed to prepare for auditions, competitions, recitals and other important occasions.