The lead singer now says their manager and bassist died. Three other band members are missing.
The tsunami hit Saturday night, after an underwater landslide triggered a volcanic eruption.
The force of the tsunami was devastating, with 20 foot waves pounding and destroying everything in its path.
The tsunami destroyed more than 500 homes, 9 hotels, 60 restaurants and 350 boats.
This is not the first tsunami that has hit the country. In 2004, hundreds of thousands of people were killed after a tsunami hit shore. The country still doesn't have a proper tsunami warning system, and this one hit without warning.