If this isn't love, I don't know how to introduce this singer. Love is a strong emotion that can include many different forms such as love, kinship, friendship, and so on. If this isn't love, then I don't know where to start. Perhaps the singer was a famous musician with many fans, but his or her songs were not necessarily about love. I can try to introduce other aspects of his/her characteristics such as music style, song theme, album, etc.