. Greek folk music originally, predominantly contained one genre, known as Greek
Demotiko (or Demotic/Paradosiako). This refers to the traditional Greek popular songs and music of mainland Greece and islands, which date back to the
Byzantine times. It was the sole popular musical genre of the Greek people until the spread of
Rebetiko and
Laiko (other genres of folk music) in the early 20th century, spread by the Greek refugees from Asia Minor. This style of music evolved from the ancient and the medieval Greek era and is still played today. The lyrics of Greek folk music are largely based on Demotic (folk) poetry (usually by anonymous lyricists) and consist of popular themes such as love, marriage, humor, death, nature, water, sea, and religion. Some lyrics make reference to the Ottoman Empire, in particular bandit insurgents (known as
klephts), Ottoman soldiers (known as
armatoloi), as well as various war figures and notable battles. Pidikto songs are more energetic and involve leaping, whilst the Syrto songs and accompanying dances are slower and more free-flowing. Some songs also are a combination of Pidikto and Syrto tempos. Universal dances that accompany Greek folk music include
Kalamatianos (a universal Greek dance from
Kalamata),
Tsamiko,
Ballos and
Sousta. == Notable folk songs ==