Final answer:
The singers in the song "A song in the night" - Halloween cover by Vision Children's Choir add choral dynamics and phrasing to the piece.
Step-by-step explanation:
In the song "A song in the night" - Halloween cover by Vision Children's Choir, the singers add choral dynamics and phrasing to the piece. Choral dynamics involve changes in volume, such as singing softly or loudly, which help create a sense of expression and emotion in the music. Phrasing refers to how the singers shape the musical phrases or lines, which can involve subtle changes in timing, dynamics, and articulation to enhance the overall musical interpretation.