Did you know Fall Out Boy wrote a song for the Shrek soundtrack?

Bassist Pete Wentz told the story on Armchair Expert, Dax Shepard's podcast. Listen to the conversation in full below!

Read more: Watch Fall Out Boy, blink-182, Green Day read mean tweets about themselves

Wentz and Shepard were talking about Fall Out Boy's cover of the Ghostbusters theme song for the reboot, when the host started asking questions about what's it like to write music for movie soundtracks.

That's when Wentz decided to tell the story of the first time the band were approached to do that. The movie? Shrek!

“The first time we wrote was in 2004/2005 for Shrek. They had temped in a song,” he explained. “We saw the rendering and it looked weird.”

“Then, we went back to the studio and said, 'They asked us for that, but they don't know that's what they want. We should give them what we think they want,'” he continued. “You can imagine how well that went.”

Who else really wants to hear what Fall Out Boy worked on now?

Wentz also talked about growing up in Chicago, feeling like he didn't fit in, how Fall Out Boy are not a party band and much more during the two-hour conversation.

Listen to the podcast in full below:

Fall Out Boy recently released some of their unfinished, previously unshared M A  N   I    A demos.

After earning their fourth No. 1 on the Billboard charts with M A N   I   A, Fall Out Boy also charted No. 1 on Billboard Artist 100 chart.

Plus, the band recently announced their “Mania” tour, bringing Machine Gun Kelly along for the ride, with a bunch of other favorites for select dates: Gym Class Heroes, Every Time I Die, Against The Current, State Champs, L.I.F.T. and nothing, nowhere. (Plus Rise Against for their special hometown show at Wrigley Field.) 

Check out the dates for the upcoming tour below!

08/29 – Uniondale, NY @ NYCB Live, Home of The Nassau Veterans Memorial Coliseum
08/31 – Uncasville, CT @ Mohegan Sun Arena
09/01 – Hershey, PA @ Hersheypark Stadium
09/02 – Buffalo, NY @ KeyBank Center
09/04 – Newark, NJ @ Prudential Center
09/05 – Pittsburgh, PA @ PPG Paints Arena
09/06 – Grand Rapids, MI @ The Van Andel Arena
09/08 – Chicago, IL @ Wrigley Field
09/09 – Columbus, OH @ Nationwide Arena
09/11 – Nashville, TN @ Bridgestone Arena
09/12 – Louisville, KY @ KFC Yum! Center
09/14 – Greensboro, NC @ Greensboro Coliseum Complex
09/16 – Orlando, FL @ Amway Center
09/21 – Kansas City, MO @ Sprint Center
09/22 – Oklahoma City, OK @ Chesapeake Energy Center
09/23 – Austin, TX @ Frank Erwin Center
09/25 – El Paso, TX @ UTEP Don Haskins Center
09/26 – Tucson, AZ @ Tucson Arena
09/28 – Las Vegas, NV @ MGM Grand Garden Arena
09/29 – Anaheim, CA @ Honda Center
09/30 – San Jose, CA @ SAP Center
10/02 – Boise, ID @ Taco Bell Arena
10/03 – Salt Lake City, UT @ Vivint Smart Home Arena
10/05 – Lincoln, NE @ Pinnacle Bank Arena
10/06 – Des Moines, IA @ Wells Fargo Arena
10/07 – Indianapolis, IN @ Bankers Life Fieldhouse
10/09 – North Little Rock, AR @ Verizon Arena
10/10 – New Orleans, LA @ Smoothie King Center

Watch more: APMAs 2016: PATRICK STUMP of FALL OUT BOY wins Best Vocalist