On 13 December 1918, only the first stanza of Janko Matúška's lyrics became half of the two-part bilingual Czechoslovak anthem, composed of the first stanza from a Czech operetta tune, Kde domov můj (Where Is My Home?), and the first stanza of Matúška's song, each sung in its respective language and both played in that sequence with their respective tunes.[12] The songs reflected the two nations' concerns in the 19th century[13] when they were confronted with the already fervent national-ethnic activism of the Hungarians and the Germans, their fellow ethnic groups in the Habsburg Monarchy.