Whoa. I’ve been missing a lot.
Listen to this Adoramus te, a short piece, reminiscent of Palestrina to my ear.
Brahms was a master of counterpoint, and this is clearly displayed in his motets. I particularly liked Warum ist das Licht gegeben dem Mühseligen for its emotional impact and the precision required of the choir. Brahms wrote many of his choral works for an a cappella choir, which for me, as an amateur chorister, is particularly terrifying.
Image attribution: Johannes Brahms, photograph By C. Brasch, Berlin [Public domain], via Wikimedia Commons https://commons.wikimedia.org/wiki/File:JohannesBrahms.jpg