This song is "dreams".

"Dreams" is nana's song. In this song, the failure of love, the helplessness of worldly affairs, and the intrigues between people are all nakedly exposed; the sad cry of emotion, the helpless murmur of decadence, rhythm and blues, dance music, HIP-HOP combines seamlessly.

The following is a relevant introduction to music:

Music is an art form and cultural activity, and its medium is timely organized and regular sound waves (a type of mechanical wave).

Its basic elements include strength, tonality, duration, timbre, etc. These basic elements are combined with each other to form the commonly used "formal elements" of music, such as rhythm, melody, harmony, intensity, speed, mode, musical form, texture, etc.

The formal elements that constitute music are the means of expression of music. Different types of music may emphasize or ignore some of these elements. Music is performed with a variety of instruments and vocal techniques, and is divided into instrumental music, vocal music (such as songs without instrumental accompaniment), and works that combine singing and instruments.

In its most general form, describes music as an art form or cultural activity that includes the creation of musical works (songs, tunes, symphonies, etc.), performances, evaluations of music, and appreciation of music. The study of history and the teaching of music.

The above information refers to Baidu Encyclopedia - Music