Complex sentence: The Music Publishers' Association of the United States (MPA) is the arm of the music industry responsible for the production and distribution of sheet music and is the oldest music trade organization in the United States, founded in 1895.
Split into simpler sentences: The Music Publishers' Association of the United States (MPA) is the arm of the music industry responsible for the production and distribution of sheet music. It is the oldest music trade organization in the United States, founded in 1895.