Brian May admitted being nervous about meeting with Psy, the Sun reports.
Speaking at the Kerrang! Awards last week, the guitarist discussed his upcoming collaboration with the singer, and the reasons that he wanted to work with him:
"It turns out he's a massive Queen fan and he says he's in the business because of us, which is always nice to hear.
"I was quite nervous to meet him. The guy's had 1.6 billion views on YouTube. It turns out that he was pretty nervous too. So we just sat there and looked at each other for a while.
"Then we had a good conversation and it was nice. It was a friendly lunch."
Psy has previously noted that Queen were one of his main inspirations for getting into music.
"If it wasn't for Queen at Wembley, I wouldn't be a pop star. When I was growing up I would watch Freddie Mercury with all those fans in the palm of his hand. He is the best."
May has stated that he has a greater understanding of the singer following their meeting.
"You never know what might happen. We talked music strangely enough, in its various forms, and our history. He's not a flash in the pan, he's made six albums. I've come to understand what he's about. He's a very thoughtful guy."