As lead singer of the Supremes and as a solo artist, Ross has earned 18 number-one singles (12 as lead singer of the Supremes and 6 as a solo artist). Ross is the only female artist to have number one singles as a solo artist; as the other half of a duet (Lionel Richie); as a member of a trio (the Supremes); and, as an ensemble member ("We Are the World" by USA for Africa). Ross was featured on the Notorious B.I.G.'s 1997 number-one hit "Mo Money Mo Problems" since her voice from her 1980 hit "I'm Coming Out" was sampled for the song.