It’s never too late to sing, but the youngest I have taught has been 5 years and the oldest at 73. For young singers, motivation and focus is key. If a 5-year-old has good focus and maturity, there are considerations. Ultimately, learning a skill takes time, energy, and commitment. The best singers, no matter the age, are open to learning and feedback, are willing to experiment with their voices, and stay patient in the process.