For 10 points, name this string sextet, the first major work by Arnold Schoenberg.
Near the end of this piece, a dominant seventh chord on A is used to modulate unexpectedly from D major to D-flat, then back from D-flat to the final D major. This piece begins with a cello and viola playing tenuto half note D's an octave apart, which continues as another cello and viola introduce a dotted theme descending from B-flat to D, the first of three passages representing the protagonists walking. The RosÃ© Quartet participated in the premiere of this piece only after being encouraged by Gustav Mahler. This composition was rejected by a Vienna music society over its uncategorized inverted ninth chord. This piece depicts a woman confessing to her lover that she bears another man's child, deriving its program from a Richard Dehmel poem. For 10 points, name this string sextet, the first major work by Arnold Schoenberg.
Near the end of this piece, a dominant seventh chord on A is used to modulate unexpectedly from D major to D-flat, then back from D-flat to the final D major.
Transfigured Night [or VerklÃ¤rte Nacht]