Sonauto is a San Francisco-based AI music generator founded in 2024 by Hayden Housen and Ryan Tremblay. The platform turns text prompts into complete, full-length songs of up to 4.5 minutes across thousands of styles, from power ballads and lo-fi to orchestral and metal. It includes community features such as Groups, staff picks, and trending content, and exposes a developer API for programmatic music generation. Sonauto went through Y Combinator and raised early funding with participation from investors including Calm Ventures, Palm Drive Capital, Pioneer Fund, and Rebel Fund.