'post-theme music'?

yo

in some tv shows, after the opening credits+song, there are some chords played to mark the beginning of the scene, mostly slow and 'complicated' chords, or some riff...

is there a name for this kind of music?

thanks!

Hmmm I think I know what you mean, perhaps if you post up an example to make it a little clearer. What about, overture or entr'acte?

http://en.wikipedia.org/wiki/Overture

http://en.wikipedia.org/wiki/Entr%27acte

Both of those sort of seem to fit what you're saying.

sounds like a mood motif

Maybe you're looking for library music, some of it have songs called "jingles" who are very short.

thanks, im searching further from these answers!