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Quartet no.13 in B flat major, op.130
Op.130 possesses six movements (each new
quartet, from no.12 to no.14, increases the
total number of movements by one). Even more
remarkable is the fact that the fertile dialectical
role of proportions, contrasts, and irregularities
– both within each individual movement and in
their overall structure – is amplified. The music
increasingly becomes a flux, a powerfully narrative
phenomenon, and its formal destination is more
and more radically opposed to the formal logic of
Classicism, born with Haydn.