Beethoven's five cello sonatas are the quintessence of his personality and work: they exemplify the creative development of this great composer who is perhaps even more relevant in our modern, ephemeral society in which little time is left for reflection. + Cellist Maja Weber and pianist Per Lundberg have been playing chamber music together for more than twenty years, mostly in piano quartets and quintets. + The idea of forming "Duo Leonore" was thus a natural consequence of their working together.