(CNN) -- This is the summer of Auto-Tune.



The Gregory Brothers have become a viral hit with their "Auto-Tune the News" videos.



No matter how hard some people -- notably Jay-Z --have tried to kill the trend of musicians using computers to make their voices sound like whiny robots, Auto-Tune technology continues to ride a cultural high.



Now the voice-altering effects are migrating from recording studios to YouTube and mobile phones.



An iPhone app called "I Am T-Pain" lets people manipulate their voices to sound like the popular rapper and Auto-Tune advocate.



The Gregory Brothers, a sibling band out of Brooklyn, New York, has become a hit on YouTube with a series of videos that Auto-Tune cable newscasts and political speeches.



The group, which also tours as a low-fi soul band, started its series of videos called "Auto-Tune the News" during the 2008 presidential debates and has gained millions of fans in recent months.



CNN spoke with Andrew Gregory, a 27-year-old member of the band, about the popularity of Auto-Tune -- the trademarked name for the popular pitch-correction software -- and the role of technology in music and society.



The following is an edited transcript of our conversation:



Why do you think your videos have taken off like they have?



I think with any sort of viral video there's a little bit of luck involved. So we're counting our lucky stars that we've been lucky enough to have it take off like that.



At the same time I think the novelty of seeing people like Katie Couric and Newt Gingrich sing has really captured peoples' attention.



How do you make the videos? What actually goes into it?



Michael likes to joke that there's a huge Auto-Tune lever that he hooks up to his computer and whenever he sees video footage he just pulls the lever, and anything that strikes his fancy is automatically Auto-Tuned.



But there's a lot of technical stuff that goes into it. ... We scour a lot of footage to see what's going to work and what's not going to work. We try to find what people are going to tune well and what people won't tune well. ...



Really, by the time the video gets made I'd say it's eight or 10 days of work that goes into one of these videos, between the four of us.



What makes someone a good candidate for Auto-Tuning?



An example of a great candidate for Auto-Tuning would be either Katie Couric or Joe Biden. Both Katie Couric and Joe Biden have just continued to astonish us with their unbelievable, almost hidden melodies in their speaking voices.



A lot of it has to do with how they project their voice in terms of their soft palate. But it also has to do with how much of an oratorical fashion they speak. Joe Biden, in a lot of his speeches, is delivering them in a preacher sort of fashion that tunes really well.



While someone who ended up tuning really poorly -- we thought he would tune really well! -- was Sean Hannity. We thought he'd tune really well just because Sean Hannity is always talking really loud. But it turns out that despite the fact that he was talking really loud, it was a nasal talking and it was a harsh and abrasive loud voice, so it ended up not tuning well at all.



Does President Obama make for a good Auto-Tune?



You know, what was great from Obama was the campaign speeches. His campaign speeches were excellent, because he was sort of using that almost gospel-preacher rhetorical style.



Since he's been president, he's been so relaxed and sort of so laid back and cerebral and sort of intellectual. He's not been quite as excellent for Auto-Tuning because there's a lot more of a mumbly tone about him. A lot less of the "Yes we can!" and a lot more of the "Weeeeell, as we
Who does not have a good Auto-Tune voice? Can the technology which the Gregory brothers use alter voices of news-makers? Who talked with Andrew Gregory? Who did CNN talk with? What is the name of one of the people behind "Auto-Tune the News"?
Sean Hannity. series of videos that Auto-Tune cable newscasts and political speeches. CNN Andrew Gregory, Andrew Gregory,
question: Who does not have a good Auto-Tune voice?, answer: Sean Hannity. | question: Can the technology which the Gregory brothers use alter voices of news-makers?, answer: series of videos that Auto-Tune cable newscasts and political speeches. | question: Who talked with Andrew Gregory?, answer: CNN | question: Who did CNN talk with?, answer: Andrew Gregory, | question: What is the name of one of the people behind "Auto-Tune the News"?, answer: Andrew Gregory,