Citing of SCHUBERT's famous mazurka.

The piece in question that Satie was parodying was actually Chopin's Funeral March. Schubert never wrote any mazurkas that would have been well-known to his contemporaries, whereas Chopin wrote many of these pieces, that were very popular. Schubert was at the time however very often cited, for example, Satie's then friend Ravel had published Schubert-imitating Valses Nobles et Sentimentales in 1911.