Melodic structures refer to the organization and arrangement of notes in a musical piece, creating a recognizable tune. These structures can include various elements such as scales, intervals, and rhythms, which work together to form a cohesive melody. Different styles of music may employ unique melodic structures, influencing how melodies are perceived. For example, Western classical music often uses specific patterns and motifs, while folk music may rely on simpler, repetitive phrases. Understanding these structures helps musicians and composers create engaging and memorable melodies.