about SMILE
Album: Goodbye Lullaby
Released: April 11, 2011
Recorded: 2010
Genre: Pop Punk, Pop Rock
Label: RCA
Writers: Avril Lavigne, Max Martin, Shellback
Producer: Max Martin, Shellback

"Smile" is a song by Canadian recording artist Avril Lavigne, taken from her fourth studio album Goodbye Lullaby (2011). Written by Lavigne with its producers Max Martin and Shellback, the song is a pop punk track. The lyrics find the singer expressing her gratitude for a special person in her life. "Smile" was released on 11 April 2011 to Australian radio stations and then on 17 May to U.S. radio as the second single. The song received favorable reviews from music critics, who described the track as a "sassy and catchy pop song". A music video directed by Shane Drake was filmed on 21 April 2011 and was released on 20 May. It has charted inside the top-forty on the Australian, Japanese and New Zealand charts.

Background
Lavigne wrote the song with its producers, Max Martin and Shellback. ‘Smile’ pays tribute to the special someone who was able to win her heart and put a grin on her face. Backed up by a punchy drum rhythm and electric guitars, Lavigne offers even more reasons why most normal guys would run in the other direction, then praises her guy for sticking around. Lavigne asked her fans via Twitter what the next single from Goodbye Lullaby should be, giving the choices between "Push" and "Smile". Lavigne confirmed that "Smile" was to be the second single from the album though reports suggest Lavigne was fighting for a "Push" release. The singer's record label, RCA Records, announced that "Smile" will be sent out to Polish radio in April, with the same expected to happen in other territories such as USA, Canada, New Zealand, Asia, and the UK. She posted photos to her Twitter of the set of the music video, filmed on April 21.

Source