Galileo Galilei was born in Pisa (then part of the Duchy of Florence), Italy, on 15 February 1564, the first of six children of Vincenzo Galilei, a famous lutenist, composer, and music theorist, and Giulia (née Ammannati), who had married in 1562. Galileo became an accomplished lutenist himself and would have learned early from his father a scepticism for established authority, the value of well-measured or quantified experimentation, an appreciation for a periodic or musical measure of time or rhythm, as well as the results expected from a combination of mathematics and experiment. Three of Galileo's five siblings survived infancy. The youngest,
Galileo Galilei (opera) and explains his theory to Marie. "Presentation of the Telescope" Galileo presents his invention to the Duchess and her Ladies in Waiting. The Duchess and Galileo reminisce about a time in their youth when they watched an opera together composed by Galileo's father, Vincenzo. "Opera within the Opera" The Duchess and Galileo, now children, are in the audience as his father's opera is performed. The magical story of the planetary figures becomes the vehicle through which Galileo is reunited with his deceased daughter. Galileo Galilei (opera) Galileo Galilei is an opera based on excerpts from the life of Galileo Galilei