As she hiked the Pacific Crest Trail in 1995, Cheryl Strayed hummed and sang along to the mixtape-radio-station in her head...

If you're not familiar with Cheryl Strayed's extraordinary adventure as told in 'Wild,' her best-selling 2012 memoir, being brought to the big screen, you're in store for a quite a ride. 'Wild – Official Motion Picture Soundtrack' brings Cheryl's 'mix tape' to life.

The soundtrack will include such classics as "Better Than the Rest" by Bruce Sprinsteen, "El Condor Pasa (If I Could)" by Simon & Garfunkel, "Suzanne" by Leonard Cohen, "Let 'Em In" by Wings, in addition to a new recording by First Aid Kit of R.E.M.'s haunting track, "Walk Unafraid."

In 'Wild,' director Jean-Marc Vallee (Dallas Buyers Club), Academy Award winner Reese Witherspoon, and Academy Award nominated screenwriter Nick Hornby (An Education) bring bestselling author Cheryl Strayed's extraordinary adventure to the screen. After years of reckless behavior, a heroin addiction and the destruction of her marriage, Strayed makes a rash decision. Haunted by memories of her mother Bobbi (Academy Award nominee Laura Dern) and with absolutely no experience, she sets out to hike more than a thousand miles on the Pacific Crest Trail all on her own. 'Wild' powerfully reveals her terrors and pleasures - as she forges ahead on a journey that maddens, strengthens, and ultimately heals her.