1930-1940s Swing jazz music, called the big band era, is a period of rhythmic development. At the same time, thezrole of the tuba in the big band has changed to double bass. Jimmy Blanton, who was the bass player in Duke Ellington's band from 1939-1931, went beyond the simple traditional method and played with various techniques, not just scales and chords. This was the beginning to change the concept of jazz bass playing style. Jimmy Blanton is the first bassist to showcase his modern jazz-based playing style. Many bassists have appeared, including Jimmy Blanton, one of whom is Ray Brown. Ray Brown was a representative bassist of the bebop era, who was influenced by Jimmy Blanton's performance and was characterized by the use of mode scales and the use of half-tones. In this paper, Jimmy Blanton and Bassist Tray Brown, who were influenced by his performance, were analyzed and compared for each word of the two performers' common performances . Throughout this paper, Jimmy Blanton's use of accurate chord tones and scales, the use of patterns, the use of preceding notes, and the dynamic performance through repeated use of rhythms and melodies, as seen in Ray Brown's improvisation. I was able to know that I was able to play. On the contrary, Ray Brown was able to discover the characteristics of playing by borrowing the familiar melody, and Ray Brown played with a minor feeling by connecting the characteristic sounds with chord tones. I understood it. The author thinks that analyzing the performances of the performers advanced through this research and continuously studying their characteristics will be of great help to the future musical development and growth.