Phoebe Says and Phoebe Knows" - Phoebe Snow, Road of Anthracite (c. 1912)
The pattern
This still is filed under Problem-agitate-solve.
Define
Name the problem, make the cost of leaving it felt, then present the way out as relief.
Mechanism
Tension then release. The offer is not an interruption. It is the only door once the cost of staying is clear.
Verdict
The problem is known but not yet urgent
Why it works
The proof is worn, not stated: a woman in white after a train journey is an argument no competing line could answer, and it converts an invisible technical fact about fuel into something the eye can check. The jingle form makes the claim rehearsable, so the audience carries the message for free and the same verse structure can be refilled endlessly to keep one campaign running for years. Naming the product benefit into a nickname, Road of Anthracite, gives the line a positioning phrase that owns the category attribute. Phoebe herself is a recurring character, so every new execution compounds recognition rather than starting over.
Steal this when
Steal this when your product's advantage is a technical or invisible input and the competitor's weakness is a visible nuisance the customer already resents. Put a recurring character in the situation where the nuisance would show, let their condition be the evidence, and lock the claim into a repeatable rhyme or refrain you can rerun for years.