Willy Wissink's rock version of the Indonesian/Dutch folk song, Ajoen, Ajoen was released and became successful in many countries. Japan was overwhelmed with this group and Ajoen, Ajoen sold more than 100,000 copies.
Personally, while going through the collection of vinyls, the chance discovery showed a singles pressing of Ajoen, Ajoen (DR25163), a traditional folk song, with its flipside, Sarina (DR25177A), composed by Bill Buysman. It is produced by Life Record (4-003), with permission from the original by Artone Gramophone in Holland.
Willy (solo guitar) and His Giants have recorded covers like, Baby Love, Great Pretender, One Night and High Noon. Their selection is different from The Jumping Jewels and they are not as popular in Singapore, but like the Blue Diamonds and Anneke Gronloh, they have certainly made some impact with their Indo/Dutch influence. They are as active as ever and, according to the website, have been doing revivals.
ndo-pop is also known as Neder-pop (Netherlands).