| 1 | Good, but need more sliding technic. | |
| 2 | Portamento portamento up there, down the sound, rehabilitation of three portamento . | |
| 3 | The silky smooth voices of Jim Reeves and Eddy Arnold epitomize the slick sounds which came out of Nashville recording studios in the 1950's. | |
| 4 | In violin performance, glissando is not only a technical skill, but also a way of violin music manifestation. | |
| 5 | The upward portamento brings to back tone with a lasting appeal and sometimes sprinkle by the roulade. |