[78-L] Pronunciation Question

[kil at roadrunner.com.invalid]

Does anyone know how to pronounce the last name of arranger/conductor/pianist Jack Pleis?
I just heard it pronounced differently from the way I have always thought correct.
Even your best recollection might help, if no one knows for sure.
I assume he is not off topic, although I didn't stop to check.
Seems to me he was married to Karen Chandler and backed her on HOLD ME THRILL ME KISS ME.
RayK