Looking for the name of a song with trumpets and piano.
 

The trumpet goes; Duh duh duh duh duh duh, duh duh duh, duh duh duh duh duh, duh duh duh etc while the paino plays calmly. I think people go "oooo" in the background, I don't believe there to be any lyrics.
Any help would be much appreciated.

Is it a modern song or real Soul or Funk?
You might only know a certain part of the song, did you hear it in an advertisement?

I would recommend you to listen to Safe and Sound by Capital Cities, it's used quite often nowadays. It has a trumpet, piano and background singers in it, also the rhythm of your "duh" could match. I wouldn't categorize that song to Soul or Funk, since Capital Cities is an Indie-Pop-Duo.

I hope I could help you out - hopefully you'll find that song soon. :)

Could be Rise by Herb Alpert.