Bieber was a presenter at the 52nd Annual Grammy Awards on January 31 , 2010 . He was invited to be a vocalist for the remake of " We Are the World " ( a song written by Michael Jackson and Lionel Richie ) for its 25th anniversary to benefit Haiti after the earthquake . Bieber sings the opening line , which was sung by Lionel Richie in the original version
earthquake
2010 Haiti earthquake
Justin Bieber