The "Whatcha Say" singer defended his tour mate's condition and decision to tape the show. He also offered a possible explanation as to how she might have been able to appear on the show but still be forced to cancel concerts.
"There's something you can take, it's like a shot, like steroids, which a lot of performers take for a quick fix," explained Derulo. Although later clarifying that he wasn't sure whether GaGa used the remedy or not, he reiterated that it is common for artists to rely on it for very short stints. "It's definitely not something you can do all the time."
Derulo also said that there are certainly no hard feelings over the incident.
Listen to the audio below, and check The RRS blog later for the interview in its entirety:
"I mean, 'Oprah' was obviously a really, really big thing - a once-in-a-lifetime opportunity," he said. "She just had to do that."
The Miami-born singer still spent the weekend in Atlantic City - performing a previously-scheduled solo date on Friday, then performing a second time on Saturday - the night he was to perform with GaGa at The Borgata. Derulo donated all proceeds from the second show to the relief efforts in Haiti - a disaster which hit home for the crooner.
"My heart goes out to Haiti. My parents are from Haiti," revealed Derulo. His uncle still resides there, and survived the earthquake.
"For the first couple days, like, he was just sleeping on the streets," Derulo said. "He was saying how the streets just smell of death."
While on The RRS, Derulo solicited listeners to text "YELE" to 501501. The text will donate $5 to Yele Haiti - a grassroots foundation started by singer Wyclef Jean to aid the country.