Johann Sebastian Bach
Motet BWV 227 'Jesu, meine Freude'
(as performed by Vocalconsort Berlin)
Transcription by Guido Menestrina
If you want to try and sing it, here are the enhanced voices version:
SOPRANO: https://youtu.be/opwD31B4lRA
ALTO: https://youtu.be/TglnxAlZ0AY
TENOR: https://youtu.be/aMNx_0D4dBA
BASS: https://youtu.be/iD9xf67hEoY