1. Twin-bar tunes (ex.1-11, №1-58) Twin-bar tunes of motivic construction occur in the music of a wide variety of ethnic groups, or at least most probably existed even if they no longer appear in the repertory. Despite their elementary form, they can be differentiated into groups as the small form reinforces the differences in the melody line. Tiny musical gestures that may appear negligible in a wide-ranged tune of four lines may assume great significance here. In terms of the character of melody outline, the Kyrgyz twin-bar tunes can be divided into three groups: a) those hip-hopping on two or three notes, 2) those rotating around the middle note of a trichord or tetrachord and 3) those that outline a hill-shaped or descending line.