Example 2. Brahms, op. 38, iii, formal ambiguity. Inter-thematic functions: P = first theme group, TR = transition, S = second theme group; Thematic (fugal) materials: SUB = subject, ANS = answer, CS1= countersubject 1, CS2 = countersubject 2; Others: MC = medial caesura, EEC = essential expositional closure, ESC = essential structural closure; I:PAC = perfect authentic cadence over the tonic