Dortmund, Germany. 17th Dec, 2017. Members of the Dortmund Choral Academy and fans of Borussia Dortmund sing Christmas carols together at the Signal Iduna Park during the first Christmas Sing-Along Concert in Germany's largest soccer stadium in Dortmund, Germany, 17 December 2017. Credit: Bernd Thissen/dpa/Alamy Live News
RMKPXN1JDortmund, Germany. 17th Dec, 2017. Members of the Dortmund Choral Academy and fans of Borussia Dortmund sing Christmas carols together at the Signal Iduna Park during the first Christmas Sing-Along Concert in Germany's largest soccer stadium in Dortmund, Germany, 17 December 2017. Credit: Bernd Thissen/dpa/Alamy Live News
Dortmund, Germany. 17th Dec, 2017. Members of the Dortmund Choral Academy and fans of Borussia Dortmund sing Christmas carols together at the Signal Iduna Park during the first Christmas Sing-Along Concert in Germany's largest soccer stadium in Dortmund, Germany, 17 December 2017. Credit: Bernd Thissen/dpa/Alamy Live News
RMKPXN19Dortmund, Germany. 17th Dec, 2017. Members of the Dortmund Choral Academy and fans of Borussia Dortmund sing Christmas carols together at the Signal Iduna Park during the first Christmas Sing-Along Concert in Germany's largest soccer stadium in Dortmund, Germany, 17 December 2017. Credit: Bernd Thissen/dpa/Alamy Live News
Dortmund, Germany. 17th Dec, 2017. Dortmund's new coach Peter Stoeger follows the first Christmas Sing-Along Concert with Members of the Dortmund Choral Academy and fans of Borussia Dortmund in Germany's largest soccer stadium Signal Iduna Park in Dortmund, Germany, 17 December 2017. Credit: Bernd Thissen/dpa/Alamy Live News
RMKPXN1GDortmund, Germany. 17th Dec, 2017. Dortmund's new coach Peter Stoeger follows the first Christmas Sing-Along Concert with Members of the Dortmund Choral Academy and fans of Borussia Dortmund in Germany's largest soccer stadium Signal Iduna Park in Dortmund, Germany, 17 December 2017. Credit: Bernd Thissen/dpa/Alamy Live News