I suspect it's a specially composed montage. It starts with the first few bars of In the Hall of the Mountain King by Grieg (the tune to Manic Miner, classic Spectrum game from the 80s if you remember that!), but then evolves into other classical pieces that I don't know. The first ad ran with the tag line along the lines of "a new combination of classics" or something - hence the musical tie-in.
I don't know the songs name I just think the music is bland. was one of the composers on this campaign and they didnt use my music.. It will appear here soon...