As a music evaluation expert, I think the best advertising music is "Canon in D Major". This piece was composed by German composer Johann Pachelbel in the 17th century and is one of the representative works of the Baroque period. It has a beautiful melody, smooth melody and lively rhythm, making it very suitable for use in advertising. In addition, the arrangement of this piece is also very exquisite, and it is played by an orchestra, which can bring a strong audio-visual impact to people.

The singer of this song is Austrian soprano Angela Betsey. Her voice is very beautiful and expresses the beauty of this piece very well. There isn't much content in the lyrics, but it can give people a strong emotional buzz when they hear the song.

Overall, "Canon in D Major" is a very nice piece of advertising music. It has beautiful tunes, exquisite arrangements, and excellent singers. It can attract people's attention well and make people have strong interest and favorability in the advertisement.