The Katy Perry - Teenage Dream (2010) page features user-uploaded high-res scans of almost every regional version of the CD and vinyl "paper" inserts.
Katy Perry - Teenage Dream review by Faint - Album of the Year Katy Perry - Teenage Dream -2010- Flac
The title track is arguably one of the greatest pop songs ever written. The intro features a driving, distorted guitar riff that anchors the entire song. In FLAC, the transition from the sparse verses to the explosive chorus feels like a physical wave of sound. The compression on her vocals is tight, but her breathing and vocal imperfections—intentionally left in to convey vulnerability—are clearly audible. "Firework" The Katy Perry - Teenage Dream (2010) page