T-Pain has narrated how he fell into a four-year-long depression after Usher told him that his use of Auto-Tune wrecked the music industry. In a clip from the upcoming Netflix series “This Is Pop”, T-Pain recounted how he fell into depression after Usher criticized his use of Auto-Tune in music in 2013. The singer said they were both flying in the same airplane and on their way to an award show, when he was called to Usher’s seat. He disclosed that Usher laid it …