I Became the World’s Greatest Music Cultivator by Being Terrible at It

In an angst-filled fantasy novel, the male lead is doomed to be a lone star. Anyone who treats him well meets a truly awful end, while anyone who treats him badly suffers an utterly horrific fate some time later. The good news is, she's the villain. The bad news is, her time as the villain is nearly up. As a wicked supporting woman hated by everyone, she is spoiled, willful, vicious, and cruel. Though she's an ordinary mortal, she acts recklessly and indulges in debauchery, relying on her status as He Yingsheng's fiancee. Then, while she was putting a green hat on He Yingsheng, he caught her in the act. He came to despise her completely, and in the end, with too many enemies, she died and her soul was destroyed. When she transmigrated into the book, music and dancing filled the scene, the beauties she'd summoned were washing up, and He Yingsheng was on his way back, already at the door. Jiang Qianqian: ...Well, this is awkward. Transmigrating into a book only to die in an instant, how's that for a story? She simply loved music. She decided to use what little time she had left to take out the Yuqing Flute from her dowry and play a final elegy for her life. But then He Yingsheng just left??? When facing an enemy, Jiang Qianqian knew she was outmatched, but resolutely picked up her sword. The flute beside her played a funeral dirge for her. After a long while, nobody had come at her. She opened her eyes. "Huh? How come you're all useless now?" Much later, when she became the greatest music cultivator, able to shatter ten thousand spells with a single melody, Jiang Qianqian was extremely pleased with the flute in her hand. The only problem was that it sounded a little bad. Everyone lying on the ground in unbearable agony: You call that "a little"?! Theme: Remember to protect yourself