The Great Composer app is safe and reliable. Great Composer Professional Edition apk is a composition series mobile client specially designed for friends who like music. Whether you are a music novice or a musician who understands music, this software can compose the music you want. There are all kinds of background sounds of musical instruments. The intuitive operation interface makes it easy for even music beginners to get started. From inputting pitches, determining tempo, editing chords, to outputting a musical notation file, you can do it all at once. The input style of software instruments matches the real thing.