 Complete the following phrase:  In December 1971, the lineup was completed with the arrival of Miša Nikolić on organ. Still largely a cover band at this point, the group played youth dance halls with covers of Santana, Deep Purple, Led Zeppelin, The Rolling Stones, and Jimi Hendrix. Soon after, the members decided to change the bands name. Influenced by Smak sveta The End of the World, a Hair-inspired musical being prepared locally at the Kragujevac Theatre in dedication to the schoolchildren killed during the 