Now here was an unexpected little gem. On audio alone this song passed us by. Well, it was a bit rambling, and never really picked up into any kind of recognisable chorus. A good chance for a toilet break on a long and complicated night of national finals, I figured. And I wasn't even particularly sold at the start of the performance, but then somehow it crept under my skin and I just couldn't take my eyes off it.So, picture this scene. A beautiful girl child is messing about on a desk with a paintbrush, while her older self in the same frock sings in the background as if it was some kind of memory from her youth. Then the mini-me leaps into the singer's world, and the two dance and laugh and interact, before the lit'lun gets the paints out and starts to make a terrible mess on the floor.Now this might all sound a bit playschool toytown, but as the performance went on it became sweeter and more utterly charming. The chemistry between the old and younger selves was clearly apparent, and at times they seem to both forget they were on telly and in a hall full of thousands of observers and just started having a laugh together, and I think that's what got to me the most.If they could charm my cynical old seen-it-all bones in such a delightful way at the end of a long and punishing national finals season, well, they must have done something right!