Released in 2009, 'P.S. (I'm Still Not Over You)' stands as a poignant centerpiece on Rihanna's 'Rihanna's - 3 Cd Collector's Set [2009]', reflecting her enduring ability to blend R&B sensibilities with pop sensibilities. The track captures the raw vulnerability of lingering affection, delivered through her signature melodic phrasing and emotive vocal delivery. As part of her broader discography from that era, the song exemplifies her transition into a more mature, introspective style while maintaining her characteristic charisma. It remains a defining recording that showcases her capacity to articulate complex romantic sentiments without relying on explicit lyrical declarations, cementing its place in her catalog of emotionally resonant ballads.