A mod that shows the note density and failed history of the map. The left end of the bar is the start of the song, the right end is the end of the song, and the color indicates the number of notes that appear per time. It also loads the SongPlayHistory mod's data and displays X at the location of past failed games.
Gray is a section with no notes. It changes from green to yellow to red to purple depending on the density of the notes.

(Beat Saber Dir)\UserData\NalulunaSongPreview.json
The position and size can be modified by editing the json file. If it interferes with the UI of other mods, please adjust it here.
NalulunaModAssistantNalulunaModAssistant
https://www.patreon.com/posts/74489335