For my money, one of the best love songs ever:
[video=youtube;fHydK4Bku84]
渡辺はま子 : 忘れちゃいやヨ
This song was considered so racy for its time that the Japanese government actually banned its sale. The singer was so distraught over the uproar it generated (and consequent embarrassment to her parents) that it wasn't until many years later that she would perform it again.