A. R. Rahman is an Indian film composer who wrote this piece for the soundtrack of the documentary film Bose: The Forgotten Hero. A portion of the gross sales are being donated to Mr. Rahman's foundation to help alleviate poverty in India. While the text of Zikr is religious, the piece is not intended to be used in a worship ceremony. The percussion may be performed using one or two drums that produce bass tones and a tambourine or similar castanet.  For the most authentic performance, the low drum should be a dumbeck, but djembes, frame drums, floor toms or even Taikos will work effectively.