Second Movement: Adagio
The second movement, in D major, is a gentle and lyrical cavatina for the violin, with the piano reduced to the role of accompanist throughout. The character is romantic and nostalgic, with the 3/8 meter creating a slow waltz-like rhythm. The melody is stated espressivo by the violin in the mid-lower register and proceeds in a calm, introspective character until a sudden two-measure modulation and crescendo lead to an impassioned climax, played in double stop thirds by the violin. Following a brief interlude the melody is stated again an octave higher and with a somewhat less restrained character—it bears the characteristic Brahmsian marking "poco forte" (literally "a bit strong.") This time the modulation takes a different turn and the climactic theme is stated a fourth higher than before, in C Lydian Dominant. As the melodic line descends and arrives back in D major, rather than playing a simple cadence the violin suddenly takes off on a rhapsodic, improvisatory arpeggiation through D major and finally reaches the triumphant third statement of the climactic theme, a third above its previous appearance and this time still in the home key of D major. A brief echo of the opening theme then leads to a final, subdued cadence.
Read more about this topic: Violin Sonata No. 3 (Brahms)