In the 1970's, Hsu Guan-chieh led the way in the writing of new lyrics and music for Cantonese songs. Add to this the popularity of the TV series and this brought a vogue of "TV theme" songs.
七○年代時，許冠傑率先作詞作曲，創作出有新意的廣東歌如「鐵塔靈魂」等，加上連續劇風行，帶動主題曲的流行。