"I Do" is a song recorded by American recording artist Colbie Caillat. It was written by Caillat and Toby Gad, and produced by Greg Wells. The song was released as the first single from her third studio album All of You (2011). The song was released to iTunes and radios on February 7, 2011 through Universal Republic. Musically, the song is an upbeat "sunny-day" pop song, and the lyrics speak about taking relationships further, like marriage. "I Do" debuted at number 38 on the Billboard Adult Pop Songs chart. It later debuted at number 23 on the Billboard Hot 100. According to Nielsen Soundscan, it has sold about 154,000 copies in the US. The music video for "I Do" premiered on March 11, 2011.