Music accompanied by words can be classified under the following headings: "Türkü" (folksongs), "Koşma" (free-form folk songs about love or nature), "Semai" (folk song in Semai poetic form), "Mani" (a traditional Turkish quatrain form), "Dastan" (epic), "Deyiş" (speech), "Uzun Hava" (long melody), "Bozlak" (a folk song form), "Ağıt" (a lament), "Hoyrat", "Maya" (a variety of Turkish folksong), "Boğaz Havası" (throat tune), "Teke Zorlatması", "Ninni" (lullaby), "Tekerleme" (a playful form in folk narrative), etc. These are divided into free-forms or improvisations with no obligatory metrical or rhythmic form, known as "Uzun Hava", and those that have a set metrical or rhythmic structure, known as "Kırık Havalar" (broken melodies). Both can also be employed at the same time.