World Piano Day
World Piano Day is held on March 29. A annual worldwide event founded by a group of likeminded people, takes place on the 88th day of the year – because of the number of keys on the instrument being celebrated. This event in the third decade of the month march is annual.
Miyako Odori in Japan on April 1 (The Miyako Odori or 都をどり is one of Japan's best Geisha events. It features a large number of Maiko and several Geiko from the Gion district of Kyoto);
Polar Jazz Festival in Svalbard, Norway on April 9 (since 1998. It is the world’s northernmost music festival);
Barbershop Quartet Day on April 11 (On April 11, 1938 the Society for the Preservation and Encouragement of Barbershop Quartet Singing in America was founded in Tulsa, Oklahoma);
Eight Track Tape Day on April 11 (It's origin likely hails from the sixties and seventies);
National Choro Day in Brazil on April 23 (Dia Nacional do Choro)