This week's "Idol Party Live" featured season-eight "American Idol" champ Kris Allen, via a pre-taped Skype interview with surprise guest Matthew Morrison, when they announced details about their collaboration for the "Glee" star's upcoming solo debut. Later, Cantiello caught up with Allen live to discuss his favorite current "Idol" contestants and his guest appearance on the show last week.

"I have been keeping up a little bit," Allen said when asked to name his favorite contestants of season 10. "I would say probably my favorites are, I really like Casey [Abrams], and I really like Haley [Reinhart]. I like Lauren too, though."

Regarding his visit to the "Idol" studio last week — not as a performer, but as an audience member — Allen said he was there to support the show and would love to perform someday if he has something to promote.

"There was talk about [performing]," Allen said. "Here's the deal: I don't want to perform unless there's something to perform, some new song. It could happen. It's definitely a possibility, but I wouldn't bank on it [this season]."

Allen said he's always happy to visit the show that jump-started his music career. "It's always nice to be back. It feels like home a little bit," he said. "It's nice to talk to all those people, the producers, meet the contestants — it's a good time."

Another subject that came up was former judge Kara DioGuardi's new book, in which she compared Allen and fellow contestant Adam Lambert's performance of her song "No Boundaries" to watching a plane fall from the sky.

"Was she reading my mind at the time?" Allen joked in response to hearing DioGuardi's comment. "She knew the song was not incredible and it was going to be rough. I don't even know what it was, it was just hard to sing. It felt like it was meant for Kara."

Don't miss "Idol Party Live" every Thursday at noon on MTV.com for analysis, celebrity guests and even some karaoke — get in the conversation by tweeting with the hashtag #idolparty! In the meantime, get your "Idol" fix on MTV News' "American Idol" page, where you'll find all the latest news, interviews and opinions.