Pop star Katy Perry tweets Lakewood High School about their lip dub video to 'Roar'

Concert will be broadcast on Good Morning America

DENVER - Pop star Katy Perry responded to a lip dub video made by Lakewood High School students hoping to win a concert to raise funds for Colorado flood victims.

"Oh my GAWD. Now this is what I call school SPIRIT: http://vimeo.com/75058173  I hear you roaring LAKEWOOD HIGH!" @katyperry tweeted Wednesday morning.

Organizers say more than 2,000 students filmed the lip dub in just one take.  A lip dub combines lip syncing and audio dubbing.

Mobile users can watch the video here: http://vimeo.com/75058173

LHS students and administrators are asking people to share the video to show your support for this effort.

You can send a tweet to Katy Perry at @katyperry or comment on her Facebook page at: https://www.facebook.com/katyperry?fref=ts to encourage her to come to Colorado. You can also direct tweets to Good Morning America (@GMA), which is sponsoring the contest.

Use the #KatyinCO hashtag in your tweets.

The contest entry period ends Oct.1 and the concert will occur on Oct. 25.

Find more information on LHS on their Facebook page: https://www.facebook.com/LHSTigerTV

If Lakewood wins, a live concert by the chart-topping artist will be held at the school (or a larger local venue) on or about Oct. 25 and will be broadcast on ABC's "Good Morning America." Lakewood High School's student body president, who filmed the lip dub, said if the school wins, she would ask Perry to move the concert to Coors Field so that it could raise money for Colorado's flood victims.

Judges will choose the winning entry. Eligible entries will be judged on the basis of creativity, on-air appeal, "wow" factor, originality and feasibility of a live performance at the entrant's qualified school.