Conversation so far:
did Giannina Braschi study literature in college?
Giannina Braschi obtained a PhD in Hispanic Literatures at State University of New York, Stony Brook in 1980.
Did Giannina Braschi study literature anywhere?
Giannina Braschi obtained a PhD in Hispanic Literatures at State University of New York, Stony Brook in 1980.
Was Giannina Braschi's only profession writing?
In 1966 Giannina Braschi became the youngest female tennis player to win the Women's Division on the island.
When did Giannina Braschi play tennis?
In 1966 Giannina Braschi became the youngest female tennis player to win the Women's Division on the island.
Did Giannina Braschi do anything else besides tennis and writing?
Giannina Braschi was also a founding member of the San Juan Children's Choir (Coro de niños de San Juan) under music director Evy Lucio.

Question: for who?
Self-contained rewrite: for who was Giannina Braschi a founding member of San Juan Children's Choir under?