: Beginners are often warned that learning from poorly charted CDLC can instill bad habits or "weird fingerings" that are difficult to unlearn later. Flexibility
Here is why: The original CDLC hack (created by a developer known as "NF" or "The Riff Repeater") repurposes the checksum of an official DLC file. The game thinks your custom song is, for example, "Paint it Black" by The Rolling Stones. To avoid piracy, the community mandates that you buy any single official DLC from Steam or Ubisoft Connect. That purchased file acts as the "key" to unlock all CDLC. rocksmith cdlc