While some scholars have suggested that Grimm was a choirboy at the ducal court, this cannot be verified with extant sources.
In this position, he taught at the Gymnasium, was music director at the churches of St. Johannes and St. Jacobi, and led a choir of his students once per month at the Magdeburg Cathedral.
Grimm is credited with being one of the first to bring the new Italian style of music to northern Germany, and he was the first to introduce figured bass practice to Magdeburg.
[3] Late in 1631, Grimm arrived in Braunschweig, where he was cordially greeted as an accomplished musician by Duke Friedrich Ulrich.
[5] Heinrich Grimm's works are cataloged using HGWV (Heinrich-Grimm-Werke-Verzeichnis) numbers assigned by Thomas Synofzik in his dissertation.