"I Do" is a song written and performed by American singer-songwriter Lisa Loeb. Released on October 14, 1997, as the lead single from her second album, Firecracker (1997), the song peaked at number 17 on the US Billboard Hot 100, becoming Loeb's second-highest-charting single, after her number-one debut single, "Stay ". In Canada, "I Do" gave Loeb her second number-one hit, after "Stay". "I Do" was her last top-20 hit in both countries.