What is the fine-grained topic of the following text: Built by the Aeolian-Skinner Organ Company in 1970, it was one of the largest in New York City, with (yes) 9,000 pipes that ranged from 2-inch tubes to mammoth 32-footers capable of producing 16-Hz notes! Only return the topic.
Aeolian-Skinner Organ in New York City