The event returns for its 10th anniversary edition next month
The pop star will resume his tour later this month following a period of rest
The incident occurred at a Las Vegas hotel
Usher had criticised T-Pain for popularising the use of Auto-Tune
T-Pain previously said that he slipped into a four-year depression after Usher told him that his use of Auto-Tune "fucked up music for real singers”
He played hits including 'Yeah!', 'Caught Up' and 'Confessions Part II'
The "once-in-a-generation" broadcast will take place in September
It's the first artist album the hitmakers have put out over their 40-year career
"Telling that story was in no way meant to disrespect that man"
The confession came in a clip from the Netflix documentary 'This Is Pop'