Wonder Girls say they faced difficulties preparing for comeback 

Wonder Girls say they faced difficulties preparing for comeback + notes the freshness of \'I Feel You\'

Wonder Girls talked about the hardships they faced preparing for their comeback with the band concept. 

SEE ALSO: Wonder Girls\' \'I Feel You\' ranks #1 on 8 music charts for the second day in a row!

The girl group opened the showcase for their new album \'

REBOOT\' earlier today at Seoul Hyundai Card\'s Understage, expressing how they felt about their transformation into a band. 

Sunmi relayed, "It felt like hitting a brick wall every time. We would get better for a while and then we\'d hit a period of stagnation. I think that\'s when the members had the toughest time. We all stormed out of the studio to bawl our eyes out." 

Yenny added to Sunmi\'s comment with, "I think every one of us ran out of the studio [out of frustration] during rehearsals. It wasn\'t easy being in sync with one another. If one of us is missing, the rehearsal wouldn\'t progress so we cheered each other on and came all the way to this point." 

I Feel You", which was composed by none other than the \'Asian Soul\' J.Y. Park. Sunmi explained, "It was a sound that you don\'t hear much these days. As soon as I heard it, I liked it." Yenny also expressed, "I got chills down my spine. We selected the title song first and worked on the rest of the album tracks." 

All their hard work has paid off as the Wonder Girls\' refreshing comeback song "I Feel You" managed to sweep eight music charts in just two hours! 

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they\'re slaying with all-kill AK with i feel you~

Wonder Girls always the trend setter..They always try something new~ not like other girl group~ play safe yet copycat~

wonder girls never disappoint! I love the look and concept, and songs too!! 

WONDERFUL\'S IS CONFIRMED YUBIN FOR UMPRETTY RAPSTAR 2 AND SHE\'S GONNA KILL IT

i remember seeing the wonder girls on nickelodeon back when i was younger! they\'ve come such a long way!! even if they\'ve lost sohee and sunmi, i\'m sure they\'ll do well :) fighting!

Honestly speaking even past everything i give these girls so much credit for working hard af to actually learn how to play some of the instruments and having to go back and learn how to actually play all the songs that were previously recorded ._. Doing something like this takes a lot of courage and you can see that they put all they had into it and i certainly payed off in the end :") the album was amazing and i sincerely hope they continue to do well and put all the haters in their places with the amazing talent they have <333

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