I want to know the answer to the following question:
What song was sung at Chopin's funeral?
All the background I'm provided with is that "Mozart's Requiem was sung at the funeral; the soloists were the soprano Jeanne-Anais Castellan, the mezzo-soprano Pauline Viardot, the tenor Alexis Dupont, and the bass Luigi Lablache;". Is that enough to answer the question?
Answer: yes