'Sing' is PIE *sengwh- (to chant a spell) — its strong verb pattern sing/sang/sung is 5,000 years old.
To produce musical sounds with the voice, typically words set to a melody; to make high-pitched whistling or buzzing sounds.
From Old English 'singan' (to sing, to chant, to recite in song; past tense 'sang,' past participle 'sungen'), from Proto-Germanic *singwaną, from PIE *sengʷʰ- (to sing, to make vocal incantation, to chant magically). The strong verb ablaut pattern sing/sang/sung is a direct inheritance from Proto-Indo-European vowel alternation marking different grammatical aspects — preserved intact across six thousand years of spoken transmission. The word's ancient association with incantation and magic formula is preserved in Old Norse
In Old Norse, 'syngva' meant both 'to sing' and 'to chant a magical spell' — and the word 'galdr' (incantation) is related to 'gala' (to sing, to crow). This deep linguistic connection between singing and magic suggests that early Germanic peoples understood vocal music as inherently supernatural.