The voice trademark is the radio program starting song of China Radio International, with a length of 40 seconds, 18 sections, 2/4 slow rhythm, alternating between G major and C major. The first four sections are the prelude part of the voice trademark, and its melody is G major; the following 11 sections are the theme part of the voice trademark, and its melody is C major, wherein the broadcaster speaks “China Radio International” in the 12th and 13th sections before the music lasts two sections to end the theme part; the last three sections play the theme music again using a celesta and transfer back to G major to end the voice trademark.

(Source: CTO net)