Fox411 Playlist: Music's freshest faces reveal their secret prep routines, favorite songs This week's 411 Playlist heads to the Hudson Valley in upstate New York for K104's KFEST. The 7-hour set featuring 13 acts was a hit amongst fans and Fox411 was on the scene to catch up with the artists who headlined the show. Over 7,500 fans attended the extravaganza to celebrate artists who will no doubt be the soundtrack to summer 2012. It featured acts like Carly Rae Jepsen, Flo Rida, Chiddy Bang and Kevin Rudolf. Fox411 asked the stars what they love most about the summer festival season and what goes into their pre-show routine. The duo Chiddy Bang had an interesting process, telling us they do "ten pushups, take a shot of something if there's something around, then we do a rap battle, then a little prayer." On the summer festival season, singer Dev says "it's fun to play with all of these artists and experience the whole day. And the fans have a great time. She also went on to talk about what song on her set list gets the fans going, 'In the Dark' is really awesome, I do this really cool mix, so I get a good response with that. But of course 'G6,' it's everybody's little party anthem. Kevin Rudolf's fan favorite is "always 'Let it Rock."" He tells us, I'm very lucky that I have a song like that where it's like you just start the record and everybody goes crazy. To join in on the fun of the festival and to hear some of the artist's favorite artists and tunes, click play on this week's 411 Playlist!