Final Answer:
In the third movement of Mahler's Symphony No. 1, the Scherzo section contains a Ländler.
Step-by-step explanation:
The third movement of Mahler's Symphony No. 1 is a Scherzo, a lively and playful musical form. Within this section, Mahler incorporates a Ländler—a traditional Austrian dance, known for its triple meter and moderate tempo. The Ländler adds a folkloric element to the movement, contributing to Mahler's characteristic blend of classical and folk influences.
Mahler's choice of the Ländler in this context serves both thematic and structural purposes. Thematically, it introduces a rustic and folk-inspired atmosphere, aligning with Mahler's broader exploration of diverse musical elements. Structurally, it contributes to the overall character of the Symphony, creating a dynamic contrast within the larger composition.