They sang a song at the concert.

Meaning: This sentence describes people using their voices to make music in front of an audience.

Choice of Words: Sang means to produce musical sounds with your voice. Song is a piece of music with words that you sing. Concert is a public performance of music.

Alternative Expressions

The people sang a song at the concert.

Meaning: This means that a group of human beings made musical sounds with their voices at a musical performance.

Choice of Words: The is an article that is used before a noun. People is a noun that refers to a group of human beings. Sang is a verb that means to make musical sounds with your voice. A is an article that is used before a noun. Song is a noun that refers to a piece of music that is sung. At is a preposition that means in the presence of or in the place of. The is an article that is used before a noun. Concert is a noun that refers to a musical performance.

The group sang a song at the concert.

Meaning: This means that a collection of people made musical sounds with their voices at a musical performance.

Choice of Words: The is an article that is used before a noun. Group is a noun that refers to a collection of people or things. Sang is a verb that means to make musical sounds with your voice. A is an article that is used before a noun. Song is a noun that refers to a piece of music that is sung. At is a preposition that means in the presence of or in the place of. The is an article that is used before a noun. Concert is a noun that refers to a musical performance.

Related Expressions