I'm sure I will get plenty of replies to this one...

Can someone please tell me the title/artist of the 'trumpet' piece of music in the m&s adverts... Thanks

YouTube - Groove Armada - At The River (http://www.youtube.com/watch?v=7KyPpHuIXZo)

Or

YouTube - Santana. Samba Pa Ti (http://www.youtube.com/watch?v=WzSayxVM_E0)

Or

YouTube - Small Faces, Itchycoo Park (http://www.youtube.com/watch?v=VJzcF0v1eOE)

according to which commercial you are talking about. The first one has the most trumpet in it.
This may not be the artist that actually did it on the advertisement.