For example when the music is purposely made secondary like in this songs:
Simple Man
ANY Red Hot Chili Peppers song (not that they are bad musicians but usually their music is focused on the lyrics first).
A lot of The Beatles songs
Then there are songs were the music (usually the guitar) mostly follows the lyrics such as in the example below. I dont' care who you are this is a bad ass song by they way. (stupid video but hey it was the 80's)
You say our love is like dynamite
Open your eyes, it's like fire and ice
Well, you're killing me, your love's a guillotine
Why don't you just set me free
I'm too young
(Too young to fall in love) I'm too young
(Too young to fall in love) too young to fall in love
I'm too young
(Too young to fall in love) I'm too young
(Too young to fall in love) I'm too young
(Too young to fall in love) too young to fall in love
Run for the hills, we're both sinners and saints
Not a woman, but a whore, I can taste the hate
Well, now I'm killing you, watch your face turning blue
Not yet a man, just a punk in the street
I'm too young
(Too young to fall in love) I'm too young
(Too young to fall in love) to fall in love
I'm too young
(Too young to fall in love) much too young
(Too young to fall in love) I'm too young
(Too young to fall in love) too young to fall in love
You say our love is like dynamite
It's no surprise, you've got one-way eyes
Well, you're killing me, your love's a guillotine
Not yet a man, just a punk in the street
I'm too young
(Too young to fall in love) I'm too young
(Too young to fall in love) to fall in love
I'm too young
(Too young to fall in love) much too young
(Too young to fall in love) I'm too young
(Too young to fall in love) too young to fall in love
Songwriters: Nikki Sixx