Millbrook Session Players. Millbrook, New York. MSP is a group of seasoned veteran musicians from New York State. Currently cataloging songs for sale with a focus on rock, blues, soul and funk genres, they are grateful to finally release their work to the public. The core lineup of musicians & composers are Joe Cutrera, John Valenti, Alfred Sire, Arthur Papanastasiou and Jeff Hollywood. Along with many noted guests appearing on each song.