The answer is: "OST song" refers to the song in the OST. OST referred to the original music in movies, TV series, and other film and television works, and the song part was the OST song. According to the search results, some OSTs of movies and television works included some songs, such as the theme song of the TV series OST of " A Thought of Passing Mountains," many of Zhou Shen's OST songs, and Yu Kewei's Top Ten Classic OSTs. Therefore, an OST song referred to the song part of the original music in a film or television work.
The OST lineup for the second season of Celebrating Years had already been announced. Among them, Li Jian sang the theme song " In My Lifetime," Zhou Shen sang the ending song " Excuse me," Liang Long, Liu Duanduan, Zhang Haowei, and Guo Zifan performed the promotional song " Aiya." These songs would bring more musical elements to the second season of " Celebrating Years," adding more emotions and atmosphere to the plot.
In some 'Death Ace' Harry Potter fanfictions, 'Death Ace' might be a new villain. This character could be creating chaos in the wizarding world in a different way than Voldemort did. For example, instead of focusing on pure - blood supremacy, they might be after a powerful magical artifact that could change the balance of power in the wizarding world. Their actions would then force Harry and his friends to face new challenges and use different strategies to stop them.
Fanfiction writers often play with the idea of unfulfilled dreams or destinies. Ace and Sabo had so much more they could have done. So, in some fanfics, their memories are so strong that they exist as a sort of spiritual force. And this force is then able to influence events in a way that leads to their physical resurrection. For example, their memories might guide Luffy to a place where he can find the means to bring them back.
One possible storyline could be that Ace's death shatters the crew's morale, and Whitebeard, in his attempt to avenge Ace, faces an overwhelming enemy. In the fanfiction, Whitebeard might use his last bit of strength to protect the remaining crew members, leading to his own death. Maybe there could be a flashback of their relationship, how Ace was like a son to Whitebeard and how that bond drove Whitebeard to fight to the end.
OST was the shortened form of original music, which referred to the music used in movies, TV series, games, and other media works. It included scores or songs from movies, as well as music from anime. OST was usually released in the form of an album for the audience to enjoy. It could be released as an independent piece of music and receive independent attention and recognition.
The OST of " Praying for Today " included a theme song called " Miracle." This song was sung by the JS group. They had once sung "Kill the Wolf" for the Legend of the Sword and Fairy. According to the comments of the netizens, this song displayed a pure Xianxia flavor as soon as it opened. In addition to the JS group, Zhou Shen, Shan Yichun, Yu Jiayun, and other singers also participated in the OST of this drama.
The OST lineup of " Celebrating the Second Season " included Li Jian, Zhou Shen, Liang Long, Liu Duanduan, Zhang Haowei, and Guo Zifan. They sang songs such as "In My Lifetime,""Excuse Me," and "Aiya." These songs were meant to continue the story of " Celebrating Years " with a melody and bring a new chapter to the audience. " The Second Season of Celebrating the Year " was an ancient drama adapted from Maoni's novel of the same name. It was starred by Zhang Ruoyun, Li Qin, and many other stars. The second season started filming on November 3, 2022, and was announced to be completed on October 17, 2023. It was aired on CCTV-8's primetime slot on May 16, 2024.
I'm not sure of a specific 'Death Ace' Harry Potter fanfiction off the top of my head. But you can try searching on popular fanfiction websites like FanFiction.net or Archive of Our Own. Use the keywords 'Death Ace' and 'Harry Potter' in the search bar, and you'll likely find some interesting stories.