Why are some sounds pleasant vs annoying?

Answer: Context and learned associations

High frequencies hurt our ears — Wrong. While very high frequencies (above 20 kHz) or very loud high frequencies can be uncomfortable, many pleasant sounds contain high frequencies—birds singing, violins, wind chimes. What matters more is context, harmonic content, predictability, and learned associations. A baby's cry (with high frequencies) is annoying even at moderate volumes because of evolutionary and contextual factors.

Context and learned associations ✓ — Correct! Sound perception is biopsychological. Some factors are universal (sudden loud sounds startle us, babies' cries demand attention evolutionarily), but much is learned. Classical music lovers might find heavy metal annoying and vice versa. Context matters—neighbor's music at 2am is annoying; same music at a party is fun. Predictability, control, and association affect our reactions as much as acoustic properties.

Only music sounds pleasant — Wrong. Many non-musical sounds are pleasant: rainfall, ocean waves, crackling fireplace, purring cats, wind in trees. Meanwhile, some music sounds unpleasant to some people. Pleasantness depends on acoustic properties (consonance, predictability), context, personal preference, cultural background, and associations. Music is just organized sound—neither inherently pleasant nor unpleasant.