Crescendo is a professional music arrangement and composition software suitable for creating staff, sheet music, guitar scores, and drum scores. It provides an intuitive interface and rich features, including easy changes to key and time, adding various notes and symbols, creating scores for different clefs, using a toolkit to write percussion symbols, adding performance instructions and lyrics, and more. The software supports MIDI keyboard and virtual piano keyboard input, allowing users to play and export music in MIDI format, saving it in various file formats such as PDF, MIDI, MP3, WAV, etc.