See inside they're all inside, theres no code Psycho witch and Witch roast were put right smack together in the video so it was hard to tell where witch roast started, if the start sounds off thats why
Voodoorea on YT (he remixes a lot of valve games's music and makes his own aswell) so i came across these and thought they were cool so i posted them for whoever may wanted to use them they're very dramatic too like orchestra and choir type so how the "appear" things and normal musics work is when a special wave starts the little 'appear' thing signals the start of the wave if you're caught by a specified special zombie this music plays so yeahh also im no l4d expert so i may be wrong