The question "Who sings to mother?" is ambiguous without more context. It could refer to several different scenarios. To give you a useful answer, I need to know which "mother" you are asking about. However, I can provide a few possible interpretations.

• General Meaning: Generally, children or other family members sing to their mother, especially on occasions like her birthday or Mother's Day.
• Lullabies: Mothers often sing lullabies to their children. If the question is asked from the perspective of the child, the answer is often the mother herself.
• Specific Songs: If you're thinking of a particular song titled "To Mother" or similar, the artist would be the singer.

To provide a more accurate answer, please clarify the context or provide more details.