The Orquestra Sinfônica do Estado de São Paulo (OSESP) has organized a concert to benefit the victims of the Japanese earthquake and tsunami. It will be held on April 11, one month to the day after the disaster, and will include Japanese and Brazilian musicians. The concert features Toru Takemitsu's Requiem, as well as music by Villa-Lobos: Bachianas Brasileiras #5 and #9, and choral works performed by Coro da Osesp. Wagner Polistchuk conducts. There's more information here.