Remix album release from Ayumi Hamasaki's "ayu-mi-x" series produced by max matsuura. Features orchestra versions of her songs containing a piano arranged track by Nobuyuki Tsujii. Part of four-album "ayu-mi-x" series out on March 30, 2011 features "ayu-mi-x 7 -version House-," "ayu-mi-x 7 -version Acoustic Orchestra-," "ayu-mi-x 7 presents ayu trance 4," and "ayu-mi-x 7 presents ayu-ro mix 4."