Gejdy (f) (plurale tantum)
17th-19th century; NB¹: According to Leng, "2-tone bagpipes are still widespread in Upper Orava in Babá hora. They are used both solo and in combination with violins (zlobcoky)";
NB²: Oddly, Wikipedia interprets the type erroneously as a 3-tone instrument.
Elschek, Oskár: Die Volksmusikinstrumente der Tschechoslowakei, 2 (Handbuch der europ. Volksmusikinstr. 1/2;2 [Slowakei]). Leipzig, 1983, p.202 (»Schlägl-Codex).
Leng, Ladislav: Slovenské ľudové hudobné nástroje (Slowakische Volksmusikinstrumente). Bratislava, 1967, p.139-143 (dvojzvukové gajdy [2-tone bagpipe]).