Here are some additional samples of Japanese TV ads that use original songs or the parody songs.
There are lot of similar TV ads in Japan, especially around foodstuff ads.
The ad for Shin Nihon House, a house reform company.
Ikuzo Yoshi is the famous Japanese singer.
This ad for a sponge cake of Bunmeido is the parody of "Can-can".
Since the first ad was created in 1962, this ad has been continuously remaked and is still broadcasting today.
The ad for Nenshou-kei Amino-shiki, a sports drink like Gatorade.
The song says that you don't have to do such an excecise but just drink Nenshou-kei.
This ad was remaked seven times, each showing an amazing excercise performed by the actor.
The ad for Poporo Saraspa, a pasta made specially for salads.
The song is the parody of Sarasponda, a folksong commonly sang by Japanese elementary students (it is said to be the Dutch folksong).
The ad for Shaki-tto Corn, a canned corn. It is the product of same company as Poporo Saraspa from above.
The common factors about these musical ads can be seen in their YouTube comments (although they are in Japanese).
Many people say the ad and especially the song brings back old memories. Some even say they still hum the melody even today.
This shows how an ad with cactchy music can be both impressive and both unforgettable.