Watch on SFlix. Behind the dazzling lights, in the darkness of the stage, there are those who silently sweat it out. These are the session musicians who elevate the perfection of the music. This is the story of those who have held the very position that only veterans can handle, possessing top-tier performance skills, a broad musical understanding, and the quick judgment to bring the scene to life. Six of Korea’s top-tier living legend guitarists begin to gather in one place solely for the sake of music…