Example 11. Excerpts from the sonata exposition of Schoenberg’s op. 7 Quartet
(a) the Pa theme, mm. 1–10
(b) the Pb theme, mm. 14–19
(c) the Pc theme, mm. 24–29
(d) the transition theme, mm. 97–103
(e) the secondary-theme complex, mm. 152–61, 167–70, 178–81