Vitamin C has written or co-written many songs for other artists. She wrote the song "We Are Gonna Happen" for actress/singer Emma Roberts featured on her 2005 "Unfabulous and More" CD. She co-wrote "Where Do We Go" with Scout Taylor-Compton in 2005. She wrote the single "Make Some Noise" for Krystal Meyers in 2008. In 2009, she wrote "Let's Get Crazy" for Miley Cyrus as Hannah Montana. Miley sang the song in-character as Hannah Montana on "" and "Hannah Montana" (season 3). Vitamin C also wrote the song "One and the Same", a duet recorded by Demi Lovato and Selena Gomez for the Disney Channel Original Movie "Princess Protection Program", which was later included on the "Disney Channel Playlist" album.