This project animates the lyrics of Mozart's 4 voice round canon 'Bona Nox' (KV 561, 1788).
In this song Mozart wishes 'good night' in Latin, Italian, French, English and German with rhyming fill-ins in nonsensical Austrian.
My children giggle their heads off each time I sing this song to them.
Note: this is the 'defused' harmless lyrics version, not the original, infamous (drastically vulgar) version of 1788.
It starts with one voice, gradually builds up to all four, cycles from piano though string quartett, harpsichord and wood winds, and then stops after switching back to piano and a ritardando.