Classical Music used in BBC4 programme trailer

[sueinsunnyspain]

Can anybody tell me the name of the classical piano piece currently being used in the trailer for a BBC 4 programme, I don't know the name of the programme but in it a man is holding a piece of gold. I've seen the trailer 3 or 4 times this week on BBC1, the music is well-known so I hope someone can help. TIA

[sueinsunnyspain]

The programme is 'A History of Art in Three Colours' and the 1st episode shown this week was 'Gold'.

I think this link is the trail in question from the BBC website but being in Spain I can't view it.

http://www.bbc.co.uk/programmes/b01l4fyl

[Joeyjake]

Gnossienne by Erik Satie