A major player Hsieh not only made the Kupa Band's reputation, he also created the Swallow Sisters, the first duo in Taiwan to make extensive use of vocal harmonies. The honey-voiced sisters hit it big in the sixties, overshadowing the many other sister acts around at the time.
推動歌壇的手謝騰輝不但造就了鼓霸的聲望，同時並在國內歌壇塑造了第一對以和音方式演唱的「雙燕姊妺」，二人珠圓玉潤的歌聲，在六○年代曾造成一股風潮，當時以姊妹檔出來演唱的歌手相當多，但是沒有一對和聲能像「雙燕姊妹」這麼出色。