Overview
Introduction
Sonatas and Interludes is a cycle of twenty pieces for prepared piano by American avant-garde composer John Cage (1912–1992). It was composed in 1946–48, shortly after Cage's introduction to Indian philosophy and the teachings of art historian Ananda K. Coomaraswamy, both of which became major influences on the composer's later work. Significantly more complex than his other works for prepared piano, Sonatas and Interludes is generally recognized as one of Cage's finest achievements.
The cycle consists of sixteen sonatas (thirteen of which are cast in binary form, the remaining three in ternary form) and four more freely structured interludes. The aim of the pieces is to express the eight permanent emotions of the rasa Indian tradition. In Sonatas and Interludes, Cage elevated his technique of rhythmic proportions to a new level of complexity. In each sonata a short sequence of natural numbers and fractions defines the structure of the work and that of its parts, informing structures as localized as individual melodic lines.
Structure
The cycle comprises sixteen sonatas and four interludes, arranged symmetrically. Four groups of four sonatas each are separated by interludes in the following way:
- Sonatas I–IV Interlude 1 Sonatas V–VIII
- Interludes 2–3
- Sonatas IX–XII Interlude 4 Sonatas XIII–XVI
Cage refers to his pieces as sonata in the sense that these works are cast in the form that early classical keyboard sonatas (such as those of Scarlatti) were: AABB. The works are not cast in the later sonata form which is far more elaborate. The only exceptions are sonatas IX–XI, which feature three sections: prelude, interlude, and postlude. Sonatas XIV–XV follow the AABB scheme but are paired and given the joint title Gemini—after the work of Richard Lippold, referring to a sculpture by Lippold. The interludes, on the other hand, do not have a unifying scheme. The first two are free-form movements, whereas interludes 3 and 4 have a four-section structure with repeats for each section.
