Step 1: Identify the sentence type.
This is an imperative sentence (suggestion). In indirect speech, “Let us” is usually reported as “suggested that we should”.
Step 2: Apply the rules.
- Reporting verb “said to” changes to “suggested to”.
- “Let us have some music” → “that we should have some music”.
Step 3: Conclusion.
The correct indirect speech is: {She suggested to us that we should have some music.}