The choice of music in the pool hall can be determined based on the atmosphere of the venue and the needs of the target customers. Here are some music recommendations that may be suitable for a pool hall:

1. Soft music: Soft music usually has soothing, relaxing melodies that can create a relaxing atmosphere. Such as new age music, jazz, popular piano music, etc.

2. Rock music: For customers who like rock music, you can play some classic songs by rock bands or singers, such as Red Hot Chili Peppers, Nirvana, Led Zeppelin, etc.

3. Electronic music: Electronic music is a type of music suitable for dancing, relaxation and entertainment. You can try some house music, techno dance music, etc.

4. Movie or TV series soundtracks: These music may evoke people's memories, such as "Star Wars", "Avatar" and other movie soundtracks.

5. Rap ??music: Rap music usually has a strong rhythm and rich lyrics, which can attract the attention of young people. For example, the works of rappers such as Eminem and Kendrick Lamar.

In general, the choice of what type of music should be based on the positioning of the billiard hall and the preferences of the target customer group. At the same time, you also need to pay attention to the volume and time of music playback to avoid disturbing surrounding residents or other places.