UEFA hold a trial run of the San Siro opening ceremony

Alicia Keys and Andrea Bocelli took to the San Siro turf on Friday for a trial run of Saturday's pre-match musical extravaganza.

To keep the playing surface in tip-top condition for the main event an enormous tarp covered the Milanese grass as the pair performed their sound check and a large dance troupe practiced choreography.

The concert will take place before Mark Clattenburg and the respective sides take to the pitch. An audience of approximately 180 million people will be tuning in to watch the Champions League final between Real Madrid and Atlético