The document discusses the history and types of pianos. It credits Bartolomeo Cristofori with inventing the modern piano while employed by Fernando II de Medeci. Grand pianos have horizontal frames and strings that extend away from the keyboard with an openable top cover. Upright pianos are more compact with vertical frames and strings, and some tall upright pianos are called upright grand pianos. Electronic pianos were invented in the 20th century and produce sound electronically rather than mechanically, allowing for incorporated songs and default rhythms.