The spring festival in Budapest starts 19th March to 5th April 2010.
Here are some highlights of the events:
Palace of Arts - Béla Bartók National Concert Hall | March 19 | 7:45 pm
Beethoven Evening
Palace of Arts - Béla Bartók National Concert Hall | March 20 | 7:30 pm
The Danish National Chamber Orchestra
Palace of Arts - Béla Bartók National Concert Hall | March 25 | 7:30 pm
An Evening with the Hungarian National Philharmonics on the Anniversary of Bartók’s Birth
Thália Theatre - Main Stage | March 25 | 7:30 pm
Moscow Soloists
Palace of Arts - Béla Bartók National Concert Hall | March 27 | 7:30 pm
Evelyn Glennie and Concerto Budapest
Palace of Arts - Béla Bartók National Concert Hall | March 29 | 7:30 pm
Berlioz: La Damnation de Faust
Uránia National Cinema Palace | March 31 | 7:30 pm
Berlin Philharmonic Violins
Palace of Arts - Béla Bartók National Concert Hall | April 01 | 7:30 pm
Romantic Aria Recital by Erwin Schrott
Palace of Arts - Béla Bartók National Concert Hall | April 02 | 7:30 pm
Il Giardino Armonico
Thália Theatre - Main Stage | April 03 | 7:30 pm
Verdi: Requiem
Palace of Arts - Béla Bartók National Concert Hall | April 05 | 7:30 pm
30 Years

More info on the Budapest Spring Festival website.