A way to cheat on this is to have the intro technically be a separate song. Playing the album you get an extended intro, but you can just play the "main" song.
The start of Judas Priest's "Screaming for Vengeance" album does this with "The Hellion" blending in to "Electric Eye". "Electric Eye" also has one of the greatest riff/hooks in metal starting off right at the beginning of the song.
The start of Judas Priest's "Screaming for Vengeance" album does this with "The Hellion" blending in to "Electric Eye". "Electric Eye" also has one of the greatest riff/hooks in metal starting off right at the beginning of the song.