Answer:
Compound: Madeline wanders in a distant hallway, and she completely loses track of time.
Complex: Madeline wanders in a distant hallway as her children search for her in fear.
Compound-Complex: As her children search for her in fear, Madeline wanders in a distant hallway; and she completely loses track of time.
Compound: Usher sings a melancholy song, and his fans fall under his spell.
Complex: Usher sings a melancholy song as the lighting in the stadium dims.
Compound-Complex: Usher sings a melancholy song, and his fans fall under his spell as the lighting in the stadium dims.
Explanation: