I came to An hellen Tagen, an SSATB choral piece in German by Giovanni G. Gastoldi, when auditioning to join a small mixed Bremen group [Christian, Henner, Maja, Marlene] after my time in the Collegium Musicum Bremen. It was amongst some 30 other SATB/SSATB pieces.
Not especially demanding for the singers but a delightful piece both for singers and audience.
It may be found in Alte Madrigale on page 48 and published by Möseler.

Lyrics