Final answer:
Zeebo, Calpurnia's son, is one of the churchgoers who can sing.
Step-by-step explanation:
Zeebo, Calpurnia's son, is one of the churchgoers who can sing. In Harper Lee's novel 'To Kill a Mockingbird', Zeebo has a talent for singing and is the song leader at the First Purchase African M.E. Church in Maycomb.