Fete de la Musique???

The Fête de la Musique', also known as World Music Day, is a music festival taking place on June 21. World Music Day is a day on which the world celebrates the magical gift of music.The idea of the World Music Day was conceptualized first in France in 1976 by American musician Joel Cohen who proposed an all-night music celebration to mark the beginning of the summer solstice.

The idea was taken up by French Music and Dance director Maurice Fleuret for Minister of Culture Jack Lang in 1981 and first took place in 1982 in Paris.

Ever since, the festival has become an international phenomenon, celebrated on the same day in more than 460 cities in 110 countries, including Germany, Italy, Egypt, Syria, Morocco, Australia, Vietnam, Congo, Cameroon, Fiji, Colombia, Chile, Nepal, and Japan. Even Chicago has attempted it...

Perhaps this is a festival Detroit could start as it has a rich Music tradition....We have the summer music festivals, but maybe it could make June 21 a big day to draw thousands from other cities to participate.

http://en.wikipedia.org/wiki/F%C3%AAte_de_la_Musique