Are there any sad songs to introduce? Example: Angel's wings

If you still don't understand, only you know my heart, exclusive taste, peaceful breakup, I can't let go, red dress, I think too much, give up, meet in rainy season, owe you too much, little star, stop loving, give up, the most beautiful scenery, insomnia, I really want to tell you. This is not enough. After separation, you have broken love, subconscious amnesia, residual memories, lost endings, and miserable love. Because you like to listen, all songs are lonely and unspeakable. Our love is atonement, saying that I will never leave. Once, our love, passionate people were always hurt mercilessly. We grew up together and fell in love with your hooligan, which was super narcissistic. Then cry goodbye, humble promise, happiness is what you need, singing a song for you, letting go is also happiness, I love myself, reappearing memories, antidote, you still love him, different, traveling alone, without makeup, never being replaced by remix, your rotten excuse, once, our love, romantic darling, only you and me in the world, remember our love, Joe, stop yesterday. A little blue, holding hands, is unnecessary. I am used to loneliness, fake action, a symbol of happiness. We sing together, loving you like a child's play, grass ringing, cheating, saying goodbye before meeting, ending in love, I love you a thousand times, and getting used to being alone. Although some are not sad, they are all very happy.