She gabbed recently with Sugarscape.com about performing with Nathan, sharing, "It's comforting to have him on stage with me. I never know what he's going to do vocally, though. He always comes out and does all these surprise runs that I've never heard before, so I'm just nervous that I'm going to mess up a harmony or something because I'll be blown off track by the run that surprised me."
She added, "[His voice] is amazing, he's a gift...I love singing with him."
Ariana also talked about further collaborating, saying, "We've not had a chance to write together, but I do love singing with him. It's fun. It's nice to be with a musician, I've never had that connection with somebody before."
And how do they make things work, even though they have mega crazy schedules?
She explained, "It's not too hard...we both sort of take any day off that we have to find the other person."
Plus, she noted, Facetime, phone calls and texting keep them connected!
Gallery | Ariana Grande Out and About!