Some time during season nine, Adam Lambert will perform on American Idol.

It's safe to assume David Archuleta will, as well.

We can make this assumption because the former runner-up is releasing a memoir on May 4. It's titled "Chords of Strength" and here are a few snippets about it, courtesy of Amazon.com:

David Archuleta was named one of the "breakout stars of 2008" by Forbes magazine and landed the number two spot on the Billboard charts.

In Chords of Strength, David shares his unexpected and inspiring journey, including how he overcame vocal cord paralysis to achieve his dream of being a singer. He reveals insecurities he felt about his voice-before he realized that he loved the way singing made him feel more than he disliked the way he sounded.

In this personal memoir, David opens up about the strength he draws from his unshakable faith and unyielding family. He pays tribute to those who continue to inspire him and through their example help him believe in himself, his talent, and his abilities.

Meanwhile, a single off Archuleta's upcoming album has also leaked online.

Give a listen to "She's Not You" below.