He worked for much of his career as a teacher and cantor in Regensburg, before being appointed as the court conductor of the Elector Palatine in Heidelberg.
In 1600 the Elector Palatine Frederick IV appointed him as Hofkapellmeister – court conductor – at Heidelberg, but Raselius died there less than two years later on 6 January 1602.
They had nine children:[2] Raselius published a number of volumes of Lutheran musical compositions in German, most notably Teutscher Sprüche auss den sontäglichen Evangeliis durchs gantze Jar (1594), a cycle of fifty-three motets for five parts.
The German musicologist Walter Blankenburg wrote that "the settings are often superior to similar works by other composers, even by later masters such as Vulpius, Johann Christenius and Melchior Franck; only Demantius may be considered an exception".
Raselius's chorales were altogether more sophisticated than those of Osiander, covering five voices with the inner parts given further musical interest.