This article provides an insight into the cooperation of musicologist Lovro Županović and conductor Vladimir Kranjčević at the Varaždin Baroque Evenings festival. This cooperation lasted for nearly three decades (1971 – 1999) and was one of the most significant projects promoting early Croatian music at the time. Županović studied, discovered and transcribed works by little known Croatian composers, and Kranjčević staged them at the Varaždin Baroque Evenings, as evidenced from numerous published records and twelve volumes in the series of music editions entitled Monuments of the Croatian Musical Past, edited by Županović. As the director of the Varaždin Baroque Evenings, conductor Vladimir Kranjčević embraced the concept of openness to various interpretative aesthetics. Moreover, the Baroque Evenings frequently featured repertoire from the 16th up to the early 19th century. Thus, Županović was in a position to prepare sheet music for contemporary Varaždin premieres of pieces by composers such as Wisner von Morgenstern and Leopold Ebner, as well as the vocal oeuvre by the preeminent Croatian master of Renaissance polyphony, Julije Skjavetić. In adition, a number of professional and scholarly conferences were attached to the festival, and Županović also staged several concerts in cooperation with his Zagreb musicology students. There is no doubt that the first thirty years of the Varaždin Baroque Evenings were marked by the cooperation between Županović and Kranjčević.