SOG-AK is a genre of Korean folk music that includes three main types: kasa (long narrative songs), gagok (lyrical songs), and sijo (short lyric poems set to music). Sijo are the simplest form, with three lines per stanza. SOG-AK incorporates Buddhist and shamanistic influences. Minyo are folk songs commonly sung by common people, often in a three-beat meter. An example sijo poem is provided about a tree at an intersection that is proud and relaxed.