Sidney Choir have finished their tour of Germany with a thrilling final concert at the Bachkirche in Arnstadt.

You can watch a performance of a very special encore - Eric Whitacre's Sleep, which has fast become an integral part of the Choir's repertoire since the American's term as Composer in Residence in 2010 - by following the link to YouTube.

This is an archived news story, first posted in 2011.

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