The "American Idol" bus will hit the highway Aug. 17 beginning a nationwide search from Portland, Oregon, to Orlando, Florida, to find the next music superstar.

The hit TV show debuted 15 years ago, making it the same age as the youngest eligible contestants.

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Music superstar Katy Perry, who will be a judge on the show, announced that auditions are open in a special video message today on "Good Morning America."

"I am so excited to be a part of the search for the next 'American Idol.' Auditions are open! So what are you waiting for? I want to hear from you. Head to AmericanIdol.com for all of the details."

There are more way than ever for singers to send audition videos online on the show's website or through social media by posting a video using the hashtag #TheNextIdol on Instagram, Twitter or Musical.ly.

A full list of the "Idol" bus's cities and dates can be found on americanidol.com