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PRL '81: Static Menu Backgrounds & Music

This mod changes the default Half-Life 2 map backgrounds into Static ones with imagery related to the PRL '81 Pack.
It also adds a custom menu music when first launching the game.

!!!!!!! IMPORTANT !!!!!!!! - Due to the way HL2 Workshop manager works, you will only see the backgrounds after loading a map/episode, most probably without the music.
To get around that and have both backgrounds AND music on startup, follow these steps:
1. Subscribe to the mod
2. After the mod has been downloaded, navigate to steam>steamapps>workshop>content>220
3. In the 220 folder, locate the folder named 3412555269. Inside it there should be two files: workshop_dir and workshop_000
4. Copy those two files into the steam>steamapps>common> Half Life 2>hl2>custom. If you don't have a custom folder, simply create one.
5. After copying the files into the custom folder, rename them into prl_backgrounds (or any name really). They then should look like this: prl_backgrounds_dir and prl_backgrounds_000.
6. Profit

You can also use GCFScape:
0. Download and launch GCFScape
1. Subscribe to the mod
2. After the mod has been downloaded, navigate to steam>steamapps>workshop>content>220
3. In the 220 folder, locate the folder named 3412555269. Inside it there should be two files: workshop_dir and workshop_000
4. Drag and Drop the workshop_dir file into the GCFScape. You should see the root folder and it's contents
5. Extract the root folder wherever you like, then navigate to steam>steamapps>common> Half Life 2>bin
6. In the bin folder, locate the vpk.exe
7. Drag and Drop the root folder into the vpk.exe, it should create a root.vpk file in the folder where you extracted the root folder.
8. Rename the root.vpk into prl_backgrounds.vpk (or any name really)
9. Place the prl_backgrounds.vpk into the steam>steamapps>common> Half Life 2>hl2>custom. If you don't have a custom folder, simply create one.
10. Profit

Credit goes to:
-Beta Aesthetics Team and Valve Developer Wiki - for helping me understand how to achieve it
-Ô Lake - for creating the song "The Walk (Piano Noir Rework)", which I modified for this mod
-Authors of the original pictures