English
singback
From sing + back.
Proto-Indo-European *sengʷʰ- ‘to recite’
Proto-Germanic *singwaną ‘to sing’
Proto-West Germanic *singwan ‘to sing’
Old English singan ‘to sing’
Middle English singen ‘to produce chants or other sung verse’
English sing
Proto-Germanic *baką ‘back’
Proto-West Germanic *bak
Old English bæc
Middle English bak ‘the back’
English back
Today it means
noun An exercise where the pupil is instructed to sing back a sequence of notes previously played or sung.
Language periods are conventional ranges, not dates for this word.
Etymograph / singback