Rose and The Avengers were one of the best groups in Sarawak and had performed successfully in Brunei and other S.E. Asian cities. In Sibu they had performed at the Palace Theatre. The band at that time comprised two brothers, Peter and Jimmy Ho, lanky James Ong and percussionist Jalek Zula. According to the sleeve (image), Zula "has thrilled many an audience with his violent drum solos." In later years one of the boys joined Malaysia's Radio TV Orchestra.
From articles on the web, Iwanaga's father has been described as a friendly man of Japanese descent who once worked in Kuching and accompanied the group to Sibu for their performances. She is currently still very popular and singing with some bands that play evergreens. Since her time there have not been any English Language artistes who recorded in Sarawak.
Two of Rose Iwanaga & The Avengers' hits, I'll Never Find Another You and You Belong To Me are on the first Singapore 60s Definitive Collection.