This is the secret code. The answer to the puzzle is the name of a song. PVGAFHWEHIGLTSD? PVWTBDUFOMS PVWAMSWDEFTC PVGAFHWEHIGLTSD? PVGAFHDTVHGFHSWEHIGLTSD? WEHIGLTSD? WEHIGLTSD? WEHIGLTSD? WEHIGLTSD? PVCAMD PAEMAM
The hints: 1. It's a song 2. Each letter is the first letter to a word in the song 3. The abbreviation of the band name is KGATWL 4. I'll hide full lines of lyrics in old projects