How is "Don't you cry" different from just "Don't cry"?

Native speaker’s answer
Rebecca
They're different in terms of emotion and personal connection. The addition of "you," although informal, hints at a deeper connection to something or someone. Here, the song is about having an emotional connection to Susanna. In terms of music, "don't you cry" also sounds better rhythmically. Ex: Don't you leave now, too! => emphasis on you Ex: Don't cry, George. => direct instruction, less emotion Ex: Oh, don't you cry, George. It'll be okay.