As a younger person in the 50s, blogger goes to either the Queen's Cinema at Geylang Road or the Jubilee at North Bridge Road in Singapore to watch Chinese movies. This particular film is one of them.
The songs Wandering Songstress (tian ya ge nu) and The Four Seasons Song (Si Ji Ge), by Zhou Xuan, featured in the 1937 movie Street Angel (Ma Lu Tian Shi). She was about 18 at that time and played the part of Xiao Hung, a young girl who had to follow her exploitative father on his rounds of teahouses to sing for a living. The father accompanied her singing on an erhu (spike-fiddle or southern fiddle), the Chinese instrument featured.
Xiao Hung had a kind-hearted elder sister who was also exploited by the greedy parents and was made to walk the streets of Shanghai, having been forced into the oldest profession; thus came the movie title, Street Angel.
In Zhou Xuan's times, a movie is sometimes just a convenient vehicle to showcase new songs from potentially popular Chinese actors/singers. This song had little to do with the main storyline and depicts the longings of a girl for her distant lover through the four seasons. Zhou Xuan's character had a love interest in the form of a struggling, marching band trumpeter.
Reference/article edited: You Tube - De Producers.