The past tense of the verb 'sing', which means to make music with your voice.
Sang can make people think of happy times, music, and fun.
Examples:
She sang a song for her friends.
Yesterday, I sang in the school play.
The bird sang a beautiful song in the morning.
The cat sang along with the music, but it wasn't very good.
I sang so loudly that the neighbors could hear me!
He sang and danced on the stage.