As a child there were some iconic ads that I grew up watching. The Cadbury's Dairy Milk ad is one. The other is the Raymond's "Complete Man" ad.
The other day I was listening to some music and I came upon a gem. Kinderszenen ("Scenes From Childhood"), Opus 15 composed by Robert Schumann.
The music is brilliant, and it's brilliant with the piano. So Melodic. Easy to see why Raymond chose it for its ads. Yes, ladies and gentlemen. The lovely background score on the Raymond Ads are in fact the work of Schumann.
The Titan ads are another example of brilliant music being used in ads (Beethoven's 5th symphony?) and so is Old Spice (Carmina Burrana). More on that later. If you know of any more such music used in ads, let us know in the comments section :)