Jennifer Lopez shamelessly said she wrote I'm Real

Jlo not only shamelessly stole music and lip synch to other artists but also said she wrote it.

Cory Rooney, producer: 
 It all started with the statement, "I'm Real," which

meant so much to Jennifer Lopez. 

[Producer] Troy Oliver came up with an idea and there was another guy,

L.E.S. [producer Leshan Lewis], who suggested using

this little loop from Yellow Magic Orchestra's “Firecracker.”

Ironically, we found out Mariah Carey used the same loop [for her song "Loverboy"].

Then, Jennifer walked into the studio and she heard the track playing, and we

were just about to switch to another song and she goes, "Wow, I love that.
Make me a quick CD of the track and let me go sit in the lounge and listen to
it while you work on this other thing you're gonna work on." About 45
minutes later she called me into the room. She said, "Listen, I think I

wrote the song. I never wrote a song by myself, before so don't laugh." 

Lopez: It was the

first time I ever wrote a melody. I just love the hook of the song. I wrote it,
so it’s kind of personal. When you write something, you’re just a little more

connected to it. 

Ashanti:
I remember being in the studio and being pissed because I was doing all this work
and it wasn't for me! [Laughs] But it
was good. I was young and it was a good learning experience and great exposure.
I demoed the record [J.Lo], so I sang
the whole entire record and then they took most of my lead vocals out and she
re-cut her part and they left my backgrounds on. It was just a nice group
effort.

https://www.etonline.com/features/196835_jennifer_lopez_im_real_oral_history

Jennifer Lopez's 'I'm Real' 15 Years Later: How the Rule-Breaking Duet With Ja Rule Prevented a Sophomore Slum

https://www.etonline.com/features/196835_jennifer_lopez_im_real_oral_history