Andy Murray's childhood friend Keith Meisner writes a song for him

A Scottish fitness teacher who wrote a tribute song about Andy Murray was invited to Wimbledon on Friday by the world number two's mother Judy.

Amateur musician Keith Meisner's singing career suddenly took off when his fellow Scot shared the song "Under The Lights, Song for Andy Murray" with his 1.5 million social media followers.

Murray told his fans: "A friend of mine who I grew up playing tennis with came up with this song."

Keith Meisner spoke to the BBC about growing up with Andy and why he decided to write the song.