No apostrophe in 'Selena Gomez song'.

[witua]

Why do we say 'Selena Gomez song' instead of 'Selena Gomez's song'?

I have noticed that in wikipedia articles and it's a bit confusing to me.

Thanks,
Vitaliy.

 

[Rover_KE]

The name was probably used attributively (like an adjective).

We say 'I sang a Kate Bush song on karaoke night' or 'I sang one of Kate Bush's songs on karaoke night'.

 

[emsr2d2]

Remind me never to come to karaoke with you, Rover! ;-)