 The songs of the period often use the ABA or ABCA form, which were new to Chinese and are still used by modern composers.The melodies are easy to remember and some of them are still sung today, such as "Wishing You Happiness and Prosperity" (恭喜恭喜) performed by Yao Lee and Yao Min.Shidaiqu music is rooted in both traditional Chinese folk music and the introduction of Western Jazz during the years when Shanghai was under the Shanghai International Settlement.