Alex Boye performs what he calls 'pop music with an African twist' and he also has YouTube's most viral video, a version of 'Let It Go' from Frozen featuring the voices of the One Voice Children's Choir.

The video has been viewed more than 10 million times since it was first uploaded to YouTube on February 13.

Who is Lexi Walker?

The female vocalist in this version of 'Let It Go' is eleven-year-old Lexi Walker. The young singer has made a name for herself around her native Utah by performing the National Anthem before Real Salt Lake soccer games.

Introducing Lexi Walker

This video from a convention held in Salt Lake City showcases Lexi Walker performing 'Somewhere Over the Rainbow.'

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