Answer for Advanced Level Exercise #1:
If you got it right, CONGRATULATIONS!
For further training, you can watch below to see a full length rendition of this Gregorian Chant (Kyrie) along with the Adagio. Be sure to concentrate on the flowing line for the duration of the piece. Watch and listen in a quiet place, with few if any interruptions, and use headphones to filter out extraneous noise. Concentration is key!
Gregorian Chant – Kyrie