Ailee's debut album, titled "Invitation," was released on February 6, 2012. The album features a mix of genres, showcasing Ailee's powerful vocals and emotional range. It includes popular tracks like "Heaven," which helped establish her as a prominent figure in the K-pop industry. "Invitation" received positive reviews for its production quality and Ailee's performance. The album's success led to several awards and nominations, solidifying Ailee's reputation as a talented singer. With this release, she gained a dedicated fanbase and set the stage for her future projects in the music scene.