In summer 2006; the incomparable Martha Argerich presented an all Schumann programme in honour of the great romantic composer's anniversary year.In summer 2006; the incomparable Martha Argerich presented an all Schumann programme in honour of the great romantic composer's anniversary year.In summer 2006; the incomparable Martha Argerich presented an all Schumann programme in honour of the great romantic composer's anniversary year.