Alicia Keys delivers a soulful exploration of trust and vulnerability on "That's When I Know," a standout track from her 2012 album, Girl On Fire. The recording captures her signature blend of R&B and neo-soul, showcasing the piano-driven elegance that has defined her career since her debut. This song reflects the mature, introspective tone of the era, moving away from the high-energy pop of her earlier work toward a more grounded, emotional resonance. As part of a discography known for its lyrical depth and melodic richness, the track stands as a testament to Keys' ability to craft intimate anthems. It remains a cherished piece within her extensive catalogue, highlighting her enduring influence on contemporary soul music and her commitment to authentic, heartfelt songwriting.