单词signature tune
na.: (无线电广播或电影的)信号(歌)曲
网络: 信号曲；音调；信号乐曲
（电视、广播节目的或某主持人主持节目时播放的）信号曲，开始曲，结束曲:
a short tune played at the beginning and end of a particular television or radio programme, or one that is connected with a particular performer
(无线电广播或电影的)信号(歌)曲
As the signature tune was faded out, the voices of a group talk ing around at able were faded up.
随着信号曲渐渐消失，一群人围着桌子谈话的声音渐渐响起来。
The first song was the aforementioned "Tea for Two, " which became his signature tune.
其中的第一首曲子就是前面提到的《两个人的茶》，这后来也成为他的经典曲目。