Und wieder ist ein Jahr vorbei is a 3-voice canon written in F♭-major in C (common time) composed by Uli Führe.
I learned this song when auditioning to join a small mixed Bremen group [Christian, Henner, Maja, Marlene] after my time in the Collegium Musicum Bremen. It was amongst 15 other SATB quartet pieces they put before me.
It may be found in Allesimada published by Fidula-Verlag.