"Secrets" is the second single released from OneRepublic's second studio album Waking Up. It was released as the first single in Germany and Austria owing to its presence on the soundtrack of Til Schweiger's new film Zweiohrküken. The movie is the sequel to the film Keinohrhasen, which used "Apologize" for its soundtrack. The song rocketed up the German and Austrian airplay charts and as of October 27 has hit #1 on the iTunes chart in Germany. The song was released in the United States iTunes Store on November 3, 2009. The song has had moderate success, staying at the top of the iTunes Rock chart for the week following its release. The song was due for a UK release on April 5 but was pushed to June 1.
The song was also used in a promo video to promote the sixth season of ABC serial drama series Lost; the song was also included in a promotional video for the upcoming third season of In Plain Sight of USA Network. The song was recently featured in the end of the 14th episode from the third season of Gossip Girl titled The Lady Vanished. The song was also played during ABC Family's Pretty Little Liars series premiere promo. The song has also been used for a commercial for the TV series Nikita and in a short trailer for the movie Love and Other Drugs. It was also featured in the conclusion of season 9 episode 6 of CSI: Miami titled Reality Kills. The instrumentals for the song, both introduction and chorus, are featured in Apple's promotional video of the iPhone 4, entitled "This changes everything. Again." It was also featured in a parody of the iPhone 4 by Funny or Die. It is prominently used in the Disney film The Sorcerer's Apprentice, being also included in the storyline. 'Secrets' is used as the theme song for the launch of Ralph Lauren's The Big Pony fragrance collection. Tedder says "Having Secrets selected for the Big Pony Fragrance Video makes us feel like we're doing something that connects with people... We are extremely excited to be partnered with a compelling brand like Ralph Lauren."
Bill Lamb from About.com rated it with 4.5 stars (out of 5), writing: "In the hands of most vocalists, "Secrets" would probably be an album cut at best, but Ryan does a great job of capturing the nuances of the lyrics in his vocal delivery. The song starts out more like a conversation, but turns into a powerful plea by the time the chorus comes around. What that plea is for depends on how you read the lyrics. In a recent search online, comments about the meaning of "Secrets" ranged from Ryan's songwriting style (he is the sole writer on this track) to a man with a boring life who wants to start living. Based on Tedder's background and current circumstances, I tend to think it's about his musical inspirations, but maybe it's best left ambiguous so people can find their own meaning".
"Secrets" debuted at #98 on the Billboard Hot 100 and has since re-entered at #83. It has reached a current peak of #21. It is their 5th top 40 hit on the Billboard Hot 100.