The middle section is in G minor, though it passes through numerous keys before returning to G major by the end.
Both of these thematic materials are played by different instruments and developed, with one section combining the triplet and pizzicato motifs with the opening theme.
The entire movement has a key signature of D minor, but it ends on a D major chord.
The fourth movement, marked Vivace, ma non troppo presto, is in 24 and has a key signature of one sharp (G major and E minor) throughout.
After a recap of the original thematic material, there is a large unison scale played forte by all of the instruments right before the stringendo coda.
BRAHMS STREICH-QUINTETT G-dur / G major Opus 111 EDITION PETERS Nr 3905b[citation needed] Swafford, Jan (1997).