Parents who wish to provide a strong foundation for the musical ability of their children should provide them with a good musical education.
Conclusion
Parents who want a strong musical foundation for their children need to ensure those children receive formal instruction.
Evidence (since)
To provide a strong foundation, parents should provide a good musical education. And formal instruction is often part of a good musical education.
Evaluate
We'd be trying to argue that parents who want the strong musical foundation don't need to ensure their kid gets formal instruction.
In other words,
The author will say, .
We could respond with something like,
Goal
Let's look for an answer that helps us argue that you can get your kid a good musical education without formal instruction, and thus formal instruction is not needed.