The 99 Llamas (left), a rap trio of sixth-graders from Contra Costa Jewish Day School, will perform an original Israel-themed rap during the event. The members of 99 Llamas — from left, Joshua Candau, Ben Nash and Zachary Abeles — formed the group as part of a leadership class at CCJDS and came up with a rap about water conservation, which they performed as the headlining act for the school’s World Water Week campaign in March.