"Annen Polka" is a dance piece played during the Season Four episode "Pip".
Background[]
The music can be heard while Pip waltzes with Estella and admits his love for her. Meanwhile, a seventeen-year-old boy appears, only for Pip to learn in shock that this person is Estella's boyfriend. Pip is then confused, as he thought by then Estella would have accepted him as her boyfriend.