Twilio Functions have been used in conjunction with OpenAI's GPT-3 engine and JavaScript to create a tool that assists musicians/songwriters in writing unique and compelling song lyrics. The tool uses the Completion API to generate responses based on user input, allowing users to overcome writer's block and produce high-quality lyrics. Twilio Functions provide a secure, serverless, and scalable environment for this application, making it accessible from anywhere with an internet connection. The tool also allows users to send SMS messages to invoke the function, providing an additional method of interaction and inspiration.