A medley of four Russian folk songs ("Katyusha", "Korobeiniki", "Farewell of Slavianka" and "Troika"), arranged with Indonesian instrument, the Angklung.
Rhythm: Russian Chanson 1 (inspired by "Troika" from Casio's own song bank).
Tone: Angklung Tremolo (main melody), GM SynthVoice (secondary melody)
I use the SynthVoice as the secondary melody to evoke the feel of older Casio's song banks
"Korobeiniki" is best known as the theme of Tetris
For "Troika" I also used the arranged version from Tetris which adds a verse before the main theme