Italian classical music is difficult to do if everyone is singing a melody at the same time; thus, polyphony gave way to homophony, and early opera consisted of relatively simple melodies with texts about Greek mythology, sung in Italian and supported by simple harmonies. The important city in Italy in this development of music in the 16th century was Florence. (See also: Florentine Camerata, Vincenzo Galilei, Jacopo Peri, Palestrina, Arcangelo Corelli.) Besides Florence, two other Italian cities are particularly worthy of mention in the period around 1600. There is somewhat of a friendly rivalry between advocates of the two cities as to which
Giovanni Peri effects. Giovanni Peri Giovanni Peri (born September 19, 1969 in Perugia, Italy) is an Italian-born American economist who is Professor and Chair of the Department of Economics at the University of California, Davis, where he directs the Temporary Migration Cluster. He is also a research associate at the National Bureau of Economic Research and the co-editor-in-chief of the peer-reviewed journal "Regional Science and Urban Economics". He is known for his research on the economic impact of immigration to the United States. For example, he has been critical of the work of George Borjas, which has concluded that immigration has negative