Casio has added four models to its Celviano and Privia digital piano lines. Casio’s Celviano AP-260 and AP-460, as well as the Privia PX-760 and PX-860, offer features, including a Hall Simulator and Concert Play, that will appeal to a variety of users, from beginners to advanced musicians. Concert Play allows musicians to play along to 10 classical pieces. For each of these 10 pieces, recordings of a symphony orchestra are included and users can select to hear them with or without the piano part. There is also a lesson feature that allows musicians to practice a piece at a slower tempo until they are ready to play it at normal tempo with the orchestra. Casio, 973.361.5400, casio.com, Booth #5900.