Pioneer Square Labs, a startup studio, shared a case study on how they killed one of their ideas, Xylo, an online platform to connect music teachers with students. The idea was tested using Google Keyword Planner and AdWords, and the results showed that the demand was not sufficient to justify the costs of acquiring customers. The studio concluded that the market was too competitive and that the supply side was already mobilized, making it difficult to create a viable business. The case study aims to help other founders think about early validation and how to make informed decisions about their ideas.