A piano sounds when a key throws a felt hammer against strings, whose vibrations a soundboard amplifies. Cristofori's invention let players vary loudness by touch.
Starter thread · AI-reviewed against its sources
Launched in 1979, the Walkman made high-quality music portable and private for the first time, shifting listening into public space and boosting mixtapes.
Starter thread · AI-reviewed against its sources
Twelve notes came from stacking pure fifths, which almost close into a circle after twelve steps, and from the need to play in many keys. Equal temperament made that practical.
Starter thread · AI-reviewed against its sources
