West Ham midfielder Alex Song explains to Football Focus the reason behind a dancing video he posted on his Instagram account.

The Cameroon international, who is on a season-long loan from Barcelona, says he was celebrating West Ham's 3-1 win over Swansea and then demonstrates a few moves at their training ground.

Watch the full interview on Football Focus, Saturday 13 December, 12:10 GMT on BBC One and the BBC Sport website.