By the 22nd century, music may sound less like something we listen to and more like something we experience. Artificial intelligence, brain-computer interfaces, immersive environments, and new forms of sound synthesis could transform how humans create, share, and feel music. Imagine listening to a song that changes according to your emotions, a melody generated from your memories, or a concert where thousands of people experience different versions of the same performance. Musicians may collaborate with intelligent systems that can create sounds beyond the limits of traditional instruments, while virtual performers could exist in entirely imagined worlds. Yet the future of music will not necessarily belong to machines. Human imperfection, emotion, cultural identity, and the unpredictability of live performance may become even more valuable in a world where technology can generate endless amounts of music. The biggest change may not be how music sounds, but what music means. In the 22nd...