Michael Kovac, Getty/ Tim Whitby, Getty
Back in 2009, Miley Cyrus packed up her dream and cardigan and blasted through our airwaves with "Party in the U.S.A." Despite her apprehension about fitting in in the land of fame and excess, the "Hannah Montana" star solidified the track as a feel-good anthem.
Little known to Miley fans is the fact that the hit was written by another pop songstress -- Jessie J!
Back then, Jessie J was Jessica Cornish, an undiscovered singer-songwriter. Cornish co-wrote the song with Claude Kelly, who leaked a 30-second snippet of her singing the demo version.
"in the studio with Jessie J reminiscing about how it ALL got started," Claude posted on his SoundCloud page. "Pea, Moonhead and the incredible Coconut Man. this is the first song we ever did. i guess we did ok, right?"
Listen to Jessie J singing "Party in the U.S.A." (with slightly different lyrics!) in the clip below.
Listen to "Party in the U.S.A. Demo"
See Jessie J in our "Secret Songwriters: Do You Know Who Wrote That Tune?" Gallery
- Katy Perry Wrote Kelly Clarkson's 'I Do Not Hook Up'
- Bruno Mars Wrote Cee-Lo Green's 'F--k You'
- Jessie J Wrote Miley Cyrus' 'Party in the USA'
- Prince Wrote The Bangles 'Manic Monday'
- Kesha Wrote Britney Spears' 'Till the World Ends'
- Carrie Underwood Wrote Lauren Alaina's '18 Inches'
- Christina Aguilera Wrote Kelly Clarkson's 'Miss Independent'
- Nas Wrote Will Smith's 'Getting Jiggy Wit It'
- Can You Believe They're the Same Age?
- Lindsay Lohan and Dianna Agron
- Adele and Hayley Williams
- Florence Welch and Lea Michele
- Lady Gaga and Mary-Kate Olsen
- Fantasia Barrino and Avril Lavigne
- Miranda Cosgrove and Taylor Momsen
- T-Pain and Carly Rae Jepsen
- Celebrities Who Married Young - Barely Legal Brides!
- LeAnn Rimes Was a Bride at 19
- Avril Lavigne Was 21 When She Walked Down the Aisle
- Hilary Duff Said 'I Do' at 22
- Kevin Jonas Proposed at 21, Married at 22
- For Hanson, Marrying Young Runs in the Family
- Kate Hudson Married at 21 After Dating Just a Year
- Solange Got Married in a Hurry
- Can You Believe They're Related?
- Miley and Trace Cyrus
- Jessica and Ashlee Simpson
- Britney and Bryan Spears
- Vanessa and Angela Simmons
- Jonas Brothers and Frankie Jonas
- Natasha and Daniel Beddingfield
- Ashanti and Kenashia Douglas
Watch AOL Music's "A Day in the Life With Jessie J"
Kellie Pickler Advances to 'Dancing With the Stars' Finals
Jennifer Hudson Performs 'Inseparable' With 'American Idol' Winner Candice Glover
Taylor Swift Admired George Jones' Passion for Performing
Tim McGraw Stops Atlanta Show to Help Ailing Fan
Carrie Underwood Says She's 'Queen of Awkward' in Marie Claire Interview
How Kidnapping Suspect Passes Time Behind Bars
Rock the Bells 2013 Lineup Includes Ol' Dirty Bastard & Eazy-E Holograms
12 Common Workout Myths Debunked
Kree Harrison Debuts Potential Single 'All Cried Out' During 'American Idol' Finale
Courtney Stodden Has A Sex Tape
Lil Wayne's Emmett Till Lyric Was Never Meant for Public Consumption
PHOTOS: 10 Deadliest Periods In History (NEW BOOK)
Mario Announces Nicki Minaj Collaboration, 'Somebody Else'
These American Companies Refused To Sign The Bangladesh Safety Accord
Beyonce Close to Tears While Thanking Fans at Belgium Show
Police Investigate Student Shooting Death
Radio Host Makes Shocking Claim About Shooting Hillary Clinton
Teen Who Died During Her First Solo Drive May Have Been Texting
LOOK: There's Something Wrong With This Picture
Marine Reunited With Four-Legged Friend
Former OJ Attorney Gives Shocking Testimony
PHOTO: Looking Good! Chaz Bono Loses 65 Pounds
PREGNANT!
McDonald's Store Owners Fear Fast Food Chain Becoming Too Slow
Guess Which State Boasts The Most Million-Dollar Homes?
PHOTO: Rob Kardashian Takes A Hike
Waitress Surprised With HUGE Tip On Tiny Bill
Will Smith, Jaden Smith Get Photobombed
Jodi Arias' Lawyers Want Out
New Leads In Case Of Missing British Girl
Pictures Showing Pregnant Teens' Bumps Banned From Yearbook
Chef Allegedly Killed Over Noodle Dinner Gone Wrong
The Afterlife Of Andy Kaufman