Soweto is a name that has transcended its beginnings, coming to mean more than simply a township in Johannesburg. The wonderful Soweto Gospel Choir live up to the importance of its origins, and the influential choir is bringing its Grammy Award-winning harmonies, melodies and magic to Zagreb. The first half of the program will feature songs from “Songs of the Free” (a rousing celebration of Nelson Mandela), and the second half will be packed with thrilling interpretations of popular songs. Just wait for the version of “Hallelujah.”