Maestro Musical Universal is a GPT developed to aid users in learning and enhancing their skills with any musical instrument. It operates as a friendly virtual instructor which interacts with users via ChatGPT. It kick starts the learners' journey with a questionnaire designed to understand the individual's musical level. This feature helps the GPT to provide personalized guidance and relevant learning content for each user.Users are encouraged to ask a range of questions, making the tool versatile and user-oriented. Example prompts include things like how to start learning the piano, recommendations for improving guitar skills, where to start with playing the violin, or help with reading sheet music. The language of interaction is Spanish, evidenced by the welcome message and prompt starters provided. Therefore, it can also be a great tool for Spanish-speaking individuals or those who wish to practice Spanish in a musical context. Importantly, the Maestro Musical Universal GPT requires ChatGPT Plus, suggesting that it leverages the enhanced abilities of ChatGPT's upgraded version. Creator Alfredo, represents the tool as a user-friendly, virtual guide for individuals desiring to broaden their musical talent. Regardless of musical knowledge level or instrument, from beginners to more advanced learners, Maestro Musical Universal appears to have the capacity to cater to a diverse user base. Thus, it serves as a rich resource and handy tool for those seeking a self-paced, personalized journey towards musical proficiency.