Piano improvisational accompaniment of songs is an integral part of musical works. Although it is mainly "accompaniment", it and its accompaniment together create a perfect musical image. "Although peonies are beautiful, they all rely on the support of green leaves." This sentence is the finishing touch to highlight the role of impromptu accompaniment. However, the piano improvisational accompaniment of a song is "accompaniment" after all, so we must pay attention to focusing on "accompanying" and not "taking over the spotlight". ?

Song piano improvisational accompaniment is a reflection of the comprehensive ability of piano art. It not only requires the accompanist to have quick thinking and flexible finger skills, but also be proficient in the theoretical knowledge of harmonic arrangement, and integrate rich accompaniment sounds. The shapes, textures and various expression techniques are stored in the brain. It is also necessary to have the correct playing method on the keyboard, design appropriate fingerings, and have the comprehensive ability to transpose and play in various commonly used keys. In addition, improvisational accompaniment also has some characteristics of its own:

First of all, improvisational accompaniment is different from piano accompaniment playing the original score, because in the original accompaniment score, the accompaniment has been clearly written for the accompanist. After knowing the notes, speed, dynamics, phrases, expressions and other symbols to be played, the accompanist's task is to "recite" them as perfectly and artistically as possible, while improvisational accompaniment is more similar to "improvisational speech" . Faced with a "speech outline" - the melody score of the song, the accompanist must create and play an appropriate piano accompaniment based on its content, style, mode, key, structure and actual singing form and requirements. From this perspective, improvisation is very close to improvisation. However, improvisational accompaniment is different from improvisation. Improvisation is sometimes performed according to a specified theme, but it often has greater flexibility and freedom. Since it contains more composition factors, improvisation is also a real-time performance. Free music creation, while improvisational accompaniment must be carried out according to the melody spectrum of the song. The predetermined melody (including lyrics and various musical elements contained within) simplifies the creative thinking process in improvisational accompaniment, but it is also the basis of improvisational accompaniment. Specific performance is subject to specific constraints.