President of the Republic Dr Janez Drnovšek tonight attended the ceremonial session of the National Assembly and the ceremonial concert in honour of Slovenia's national holiday – Independence and Unity Day. The ceremonial concert given by RTV Slovenia Big Band Orchestra under the leadership of conductor Tadej Tomšič and by two solo singers, Mia Žnidaršič and Eva Hren, took place in the Gallus Hall of the Cankarjev dom cultural and congress centre in Ljubljana.