WATCH: Roger Federer serves up 'Bongo Cam' masterclass

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Roger Federer may have lost his singles match at the Hopman Cup on Wednesday, but the 17-time grand slam champion soon had a smile on his face thanks to Perth Arena's 'Bongo Cam'.

After being beaten in three sets by Alexander Zverev, Federer took up a watching brief for Belinda Bencic's encounter with Andrea Petkovic.

And the 35-year-old soon prompted amusement as, during a break in play, he appeared on the big screen and enthusiastically took up the challenge of playing the drums super-imposed beneath him.

Zverev also participated, but it's safe to say Federer was the clear winner of their off-court battle.

Have you ever seen anyone look so happy?