Vespera Confessore KV 339:
Soprano:
https://www.youtube.com/playlist?list=PL9SD3GZ81VdhI1xWHh81anbcX0j2ih2d0
Alto:
https://www.youtube.com/playlist?list=PL9SD3GZ81Vdi4icd8dvRq6G93SMMhEfwH
Tenor:
https://www.youtube.com/playlist?list=PL9SD3GZ81VdhO5PXJr8kYdpBOEOzuDKVj
Bass:
https://www.youtube.com/playlist?list=PL9SD3GZ81Vdir7z7n6FCLMQucB10X9hT9
Singing in a choir can be excellent fun, prized for the camaraderie alone. But if you want to take your choral singing a bit more seriously, you will have to develop certain musical skills. Learning scales and key signatures will help enormously with your sight-reading, chords will act to improve your harmonizing and internalizing intervals will promote your ease in singing new or unfamiliar music.
Here you can learn all these things and more: