The official channel of Hawaiian duo Kaʻau Crater Boys.

The Kaʻau Crater Boys were formed in the early 1990s by Ernie Cruz Jr. (the son of Ernie Cruz Sr. and brother of Guy and John Cruz who are also local entertainers) and Troy Fernandez. According to Ernie's brother John, Troy needed a job to keep him out of prison, so he asked Ernie if he could be a part of his gig at Mooses Mc Gillycuddy. Ernie was reluctant at first, but because they knew each other's family, Ernie helped Troy out. This is how the Ka'au Crater Boys were started.

Their first album, Tropical Hawaiian Day, was released in 1991 and marked the official beginning of Troy and Ernie’s 7-year partnership as one of the most successful groups in contemporary island music.

Cruz played bass, acoustic guitar and handled main vocals for the majority of songs they recorded. Fernandez also played bass, contributed to vocals (mainly as a backing vocalist), but was mostly renowned for his musicianship with the ukulele.