Schubert gave full play to the artistic expression of the piano in his artistic song creation, organically combined the words, music and accompaniment of the song, and naturally blended poetry and scenery, greatly increasing the expressive force of the song. For example, Schubert's song "Trout" is a lyric song in the form of "changing segments". The first two lyrics use the same tune, describing the gesture of trout frolicking in a clear stream and the scene of a fisherman standing by the river quietly fishing. Because the river is clear, trout can't get on his hook. The music adopts a big key mode, and the melody is clear and active, while the piano is matched with a light sound pattern simulating the sound of running water in the middle and high notes, which makes the image of the song more vivid. Schubert's creation has lasting vitality and strong artistic appeal. In each of his songs, piano accompaniment always plays up the atmosphere of the song, sets off the emotion of the song, shapes the background of the song and gives the song accompaniment new life. In his vocal music works, accompaniment is not just a subordinate melody, but can be used to express what melody can't. Piano accompaniment always plays a foil role, especially by using the change of color, the sudden slowdown of speed, the extension and pause of sound to create a specific artistic conception for the singer, thus deepening the artistic appeal.
Therefore, the significance of piano accompaniment is not only to support harmony and rhythm with the melody of the song, but also to render the musical atmosphere through freehand brushwork or modeling. To feel and analyze the style connotation and expression techniques of the works from the structural development of the artistic image of each song and the accompaniment texture of harmony processing can help us handle the artistic songs more perfectly.
Iii. Requirements and characteristics of art songs Singing European art songs is an important part of European vocal music art, which has a great and significant influence on the world vocal music art.. Many classic works and excellent poems in art songs are still circulating today. Art song is a vocal category that needs more elaboration in art, and it is a kind of artistic and professional "song creation". Art songs combine poetry and music into a perfect artistic whole, with higher artistic level and more difficult artistic skills than folk songs and ordinary songs. Singing art songs requires not only superb vocal skills, but also certain literary skills and rich imagination, so as to make singing poetic and intoxicating. Schwal Zkopp, the most famous German contemporary art singer, once said: "Singing opera is like painting with a big brush dipped in paint, while singing art songs is like meticulous painting, which needs to be described with a very fine pen." This is a simple and popular interpretation of the singing characteristics of art songs, combining exquisite vocal skills with delicate emotional expression, bringing people into your songs with beautiful voices and touching poems, and making people imagine with your songs. The tenor solo song "My Sun" with Neapolitan folk style is a household name, which is inseparable from the singing of the three tenors in the world. Pavarotti's steady and lyrical singing, Domingo's plump and powerful singing, and carreras's lyrical and clear lines have made my sun widely circulated. In particular, the three tenors once sang My Sun together in a performance, which not only showed the superb singing level of the three singers, but also