Honolulu ? Legendary crooner Don Ho, known for his raspberry-tinted sunglasses and catchy signature tune “Tiny Bubbles,” has died, his publicist said. He was 76.

Publicist Donna Jung said the singer died Saturday morning of heart failure. He had suffered with heart problems for the past several years, and had a pacemaker installed last fall. In 2005, he underwent an experimental stem cell procedure on his ailing heart in Thailand.

Ho entertained Hollywood’s biggest stars and thousands of tourists for four decades. For many, no trip to Hawaii was complete without seeing his Waikiki show – a mix of songs, jokes, double entendres, Hawaii history and audience participation.

Shows usually started and ended with the same song, “Tiny Bubbles,” which Ho mostly hummed as the audience enthusiastically took over.