The author of "singing aloud" is

He jingzhi.

Singing aloud is a patriotic poem written by He Jingzhi, a famous proletarian poet, in Beijing from June to August 1956. This poem is full of passion and strength. Poetry appreciation: Oh, how wonderful! Our life, our motherland; Oh, how nice! Our time, our life! Let's sing loudly! Louder, louder, louder!