What a Wonderful World. According to the announcement issued by China Merchants Bank, we learned that the background music of Cigna’s advertisement is What a Wonderful World, song duration: 2:21, release date: October 1967, original singer: Louis Armstrong, music style: Traditional pop, Author: Bob Thiele. China Merchants Bank was established in Shekou, Shenzhen in 1987. It is the first joint-stock commercial bank in China that is completely owned by corporate legal persons. It is also the first pilot bank for the country to promote banking industry reform from outside the system.