"I Do", also known as Robin's Song, is a song written and recorded by Canadian country music artist Paul Brandt. It was released in July 1996 as the second single from his debut album Calm Before the Storm. The song reached number 2 on the Billboard Hot Country Singles & Tracks chart and number 1 on the Canadian RPM Country Tracks chart. It is his most successful song to date and his highest-charting song in the United States.