What is EarSketch primarily used for?

EarSketch is primarily designed as an educational platform that teaches coding through music composition. It allows users, particularly students, to learn programming concepts while engaging with music, thereby combining creativity with technical skills. By using a visually engaging interface, it introduces various coding languages and concepts in a fun and interactive manner, making learning more accessible and enjoyable. This unique approach not only helps in understanding coding but also fosters a passion for music, providing a dual educational experience.

The other options, while related to musical activities and software, do not accurately capture the core purpose of EarSketch. For example, mixing audio tracks or professional music production involves more advanced and specialized software that is not the primary focus of EarSketch. Similarly, online music streaming platforms serve a completely different function, as they are meant for distributing and listening to music rather than educational programming.