She does have some "note intuition" though. Considerable variation in her live performances.
let me clarify;
one on side, you got people like Madonna, where literally anyone could have done what they do. As far as my knowledge of the music industry extends, the myth is that her contribution to her discography are
1. the words "holiday, holiday"
2. the phrase "music makes the people come together"
with everything else being written by someone else, mostly Nile Rodgers.
On the other, people like Tina Turner, Whitney Houston, etc - there's many, because it's absolutely not weird that singer *do not* write their music, specially solo singers. The amount of cooperation that they bring in writing their own melodic and lyrical lines varies, but even when not trained, they come from families and careers of professional musicians.
The fact alone that they don't write songs, doesn't mean they are not musicians.
At age eleven, Houston began performing as a soloist in the junior gospel choir at the
New Hope Baptist Church in Newark, where she also learned to play the piano.
[16] Her first solo performance in the church was "
Guide Me, O Thou Great Jehovah".
[17]
While Houston was still in school, her mother, Cissy, continued to teach her how to sing.
[18] Cissy was a member of the group
the Sweet Inspirations which also opened for and sang backup for
Elvis Presley.
[19] Houston spent some of her teens touring nightclubs where Cissy was performing and she would occasionally get onstage and perform with her. Houston was also exposed to the music of
Chaka Khan,
Gladys Knight and
Roberta Flack, most of whom would have an influence on her as a singer and performer.
[20] In 1977, aged 14, she became a backup singer on the
Michael Zager Band's single "Life's a Party".
[21] When she was around 16, Houston sang background vocals for
Chaka Khan and
Lou Rawls on their 1980 albums,
Naughty and
Shades of Blue, respectively.
[
here instead is the link if you wanted to hear what madonna sounded like in the "Early Life" part of her Wikipedia page:
https://www.youtube.com/watch?v=ti_mt_FV18A (don't click it, it's horrible)
Dude, i grew up listening to her first 2 albums, you won't get me to criticise Whitney. Normally one or more professional musicians will bring them songs, and they re-work them.
Also, Madonna relied on already-finished products, but most singers try their songs on tour, and by the time the song is ready to go in the album, it will have changed noticeably.
You can get a hint of this if you listen to Bowie's live albums. He was his own producer so he would put it in the album first, but by the end of the tour the song sounds nothing like it did at release.