Around 1919, Martinů wrote Dva mužské sbory (Two Male Choruses) on Lithuanian folk poetry, but up to now they are thought to be lost. The premiere took place in Prague 2 March 1919 and it was performed by Jihočeské pěvecké sdružení (South Bohemian Choral Society) under the baton of Josef Masopust. The composition was never published.
„List of Martinů’s Works XI – Vocal Music,“ Martinů Revue, vol. XII, no. 3, 2012, p. 11.
Zdeněk Zouhar, „Bohuslav Martinů – choral composer,“ Czech Music, no. 4, 1995, p. 1–2.