Contrasting with 2020's anime, which commonly features average or unhappy protagonists that suddenly are teleported/have their lives changed and their frustrations are magically solved, anime from the 70's often features protagonists that come from unfavourable origins or poverty and that have to overcome their situations by themselves. They usually show an inspiring strength to endure the often exceedingly unfair circumstances they are put into, and courage to face all sort of hardships. You see similar situations in anime like Attack No.1, Candy Candy or Ashita no Joe. Sasurai no Taiyou follows this trend, featuring the tale of a girl who, being switched from her rich birthfamily as a baby, ends up living in a very poor house, and the story develops between her dream of becoming a singer/guitarist and the many hardships she faces in her life, which more often than not comes from her plain lack of money. Her "rival", and antagonist, Miki, who is the other switched baby, often uses her family's wealth and influence to bribe her way into success, while Nozomi has to face every sort of realistic difficulty.

This is an anime that develops a believable story, with most events being authentic and engaging. While the focus is on Nozomi's late-teen professional, familial and, in a smaller measure, romantic life, there's also, in parallel, the underlying plot of the switched babies at birth. This story mostly stays unsolved and it keeps you in anticipation of its eventual resolution throughout the anime. And, of course, it has a musical subplot, considering Nozomi's dreams regarding music.

If you liked any other 70's anime like the ones I mentioned, it's very likely you'll enjoy this one as well. This is a type of story you'll mostly only find in old anime like this.