One reason why people difficult to learn keroncong singing styles is limited reference about how to sing keroncong. This article aims to describe the difference of keroncong singing styles between two famous keroncong singers, Tuti Maryati and Sundari Soekoco. It can be used as a reference for beginner keroncong singers. The method used was document analysis and literature review that serves to describe the singing style. The results of this study show that each singer has their characteristics in singing keroncong songs. The amount of ornaments used by Tuti is fewer than Sundari's. But Tuti was more creative because she used different ornament while the same word was repeated. Otherwise Sundari tend to repeat the same ornament for the same word. Therefore, beginner keroncong singers are recommended to study Tuti Maryati's singing style before learning Sundari Soekoco's singing style.