"I Will Be" is a song co-written and originally performed by Canadian singer Avril Lavigne, which was included on the North American, Taiwanese, and Japanese limited editions of her third studio album The Best Damn Thing and as an iTunes Store pre-order bonus track in 2007; British singer-songwriter Leona Lewis covered the song for her debut studio album, Spirit, also released in 2007. Max Martin and Lukasz Gottwald also co-wrote the song, whilst production was helmed by Gottwald under his production name Dr. Luke. It was co-produced by Steven Wolf and Max Beckley and Smit. It is a piano and guitar led song. It garnered a mixed response from music critics, with some critics praising Lewis's vocal performance and delivery, whilst others described it as emotionless.