An Arabic rock musician and an American pop singer created this awesome cover of A.R. Rahman’s Oscar-winning song, “Jai Ho,” using only their voices and mouths.

Alaa Wardi, an a cappella musician from Iran who lives in Saudi Arabia, collaborated with American a cappella vocalist and producer Peter Hollens to create this incredible cover of "Jai Ho" from the Oscar-winning movie, Slumdog Millionaire.

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