1. Theme Song "Promise"

"Promise" is a song performed by Deng Chao, which is the ending song and theme song of "You are my brother".

2. The title song "All My Life"

"All My Life" is an album: Poverty and Wealth, sung by Li Chunbo, written by Li Chunbo and composed by Li Chunbo.

Extended information:

"You are my brother" tells the story of the growth of four brothers in an ordinary family. The four Ma brothers live with their parents in the courtyard of Pener Hutong, leading a poor and peaceful life. After his parents died in a car accident, the eldest brother Ma Xuewu (played by Zhang Jiayi) resolutely dropped out of school and took on the responsibility of "parents". Since then, the four brothers have lived together as brothers, but when faced with life directions such as "money", "love" and "pursuit", the four brothers have different choices and completely different fates and circumstances.