"Back to December" is a song by Taylor Swift from her third studio album, Speak Now, released in 2010. The song is a heartfelt apology to a past lover, reflecting on the regret and longing for a relationship that ended. It showcases themes of nostalgia and remorse, as the narrator wishes they could turn back time to make different choices. The lyrics convey a sense of vulnerability and emotional depth, highlighting the impact of lost love. The song's orchestral arrangement complements its poignant message, making it one of Swift's most memorable ballads. It resonates with listeners who have experienced similar feelings of regret in their own relationships.