He is known for the 1964 song "Stern über Bethlehem", which is often used by star singers, and appeared in 2004 as a cover version, She.
He composed numerous songs in the genre Neues Geistliches Lied.
Zoller's song "Stern über Bethlehem" found its way into some regional parts of the Protestant hymnal Evangelisches Gesangbuch (EG), for example in Bavaria EG 545, in Hesse EG 542, in Württemberg EG 540.
Frank Raberg: Biografisches Lexikon für Ulm und Neu-Ulm 1802–2009.
[2] Süddeutsche Verlagsgesellschaft Ulm im Jan Thorbecke Verlag, Ostfildern 2010, ISBN 978-3-7995-8040-3, (p. 489).