Sometimes it's just a creative choice by the animators to make the character's reaction more pronounced and memorable. It helps to catch the viewer's attention and add an element of fun.
Yes, there are some. You can try looking on fanfic websites like Archive of Our Own. There might be various interpretations of the disco bear and pop relationship in the fanfics there.
In a non-fiction readers' workshop, a 'pop out sentence' is usually one that conveys a key idea or makes a strong impact. It might be because of its unique phrasing, powerful emotion, or important information.
Perhaps it's a sign of a transformation. For example, in a story about a human turning into a mermaid, the popping out of the belly button could be the first sign that the transformation is starting. It's like the body's way of preparing for the new form.
" I'm a Director, I'm Not Bad " was a novel about urban life. The full text was free to read. This novel told the story of the protagonist, Xu Xin, who would do anything to get out of the spotlight and gain popularity in the entertainment industry. In the novel, Xu Xin dreamed of becoming a beam of light and was unwilling to let it rot. The specific reading method and whether there were pop-up advertisements needed to be further checked on the relevant websites.
There were many classic old songs to recommend. Among them were Lee Jong-seung's "The Hill" and "Crossing the Ocean to See You," Lin Ji-hyun's "Li Ren," Jacky Zhang's "She Came to Listen to My concert," Chen Baiqiang's "I Just Like You," Faye Wong's "Boring" and "Red Bean," and so on. In addition, there was a collection of classic old songs from the 70s, 80s, and 90s, as well as classic nostalgic Cantonese songs and Hong Kong pop songs from the 80s. These songs were all classic representatives of popular old songs and could meet the needs of listeners of different ages.
We can find some information related to the 500 popular songs. In document [1], there was a list of popular songs recommended for 2022, but only the names of the first 18 songs were provided. The document [2] provides a list of 500 classic old songs, but these songs are nostalgic and may not be the latest pop songs. The document [4] mentioned a collection of 500 popular songs on loop, but did not provide a specific list of songs. The document [6] mentioned a collection of 500 popular online songs, but it also did not provide a specific list of songs.
To sum up, we can't accurately answer the question of 500 popular songs.