The term WHERE TO HEAR AN ARIA can be solved by the crossword solution OPERA. An OPERA is a form of musical theatre that combines music, singing, and spoken dialogue. It is usually performed in an OPERA house, which is a large theatre specifically designed for OPERA performances. An aria is a type of song that is sung by a solo singer in an OPERA. Therefore, the answer to the crossword clue WHERE TO HEAR AN ARIA is OPERA.