BSO Music Director Andris Nelsons conducts Mahler's all-embracing ninety-minute Symphony No. 2, Resurrection, featuring the Tanglewood Festival Chorus, along with Chinese soprano Ying Fang and Argentine-born mezzo-soprano Bernarda Fink. The third movement is a setting of "Urlicht," a poem from Des Knaben Wunderhorn, a source of texts for many of Mahler's songs, and the vast finale includes a setting for chorus and soprano of verses from Klopstock's poem "Resurrection." James Burton will conduct Maija Einfelde's Lux aeterna, for mixed chorus, the first of two Latvian works performed this year to mark the centenary of the country's independence.