 The firm's facilities in the new Aeolian Building included a 150-seat recital hall, recording studios for Duo Art piano rolls, offices, design studios, drafting rooms, and a director's room in the upper stories.The Aeolian Company (as Aeolian American Corp.) remained in the Aeolian Building until 1938, after which it leased half of Chickering Hall on West 57th St.It was Congressional suspicion of the market power of the Aeolian company during the early 20th century that prompted adoption of the first compulsory license system in U.S. copyright law, for the mechanical reproduction of musical compositions, a category that included piano rolls.