German organist and composer. Organist in the St. Nikolai Church, Hamburg 1596 until his death. Published 1604 Melodeyen-Gesangbuch together with 3 other Hamburg organists, Hieronymus and Jakob Praetorius and David Scheidemann. Melodeyen-Gesangbuch contains 29 choral settings by Joachim Decker.
Source: Article on Decker in Musik in Geschichte und Gegenwart.
