"Journey4YOUth sort of manifested itself. We raised support by playing music and collecting everything from couches to canned tomatoes."
His day jobs after New Orleans varied from busking in Chicago, waiting tables, and working eight-hour shifts in a warehouse. Then he decided to try music fulltime. "It is something that I feel 'called' to do. I've done many things in my life.
"Through my different occupations, nothing has ever given me the satisfaction of fulfilling what I believe I was created for; which is to be part of something that is bigger than myself.
"Playing music has been the one thing in my life that gives me a creative medium to express myself artistically for the benefit of other people."
Ernst, who has since recorded three studio albums and a double live album, said he met his American wife in New Zealand and they had roamed the South Pacific and Southeast Asia before heading to Africa and working three months as volunteers.
They returned Stateside and after winning NGO status for Journey4YOUth played 150 shows in 27 states, driving almost 56,000km in a vegetable-oil-powered former school bus.
They later performed throughout Europe before last year touring South Africa and the American Midwest.
Brian Ernst will play King Street Live, Masterton, from 8pm on Sunday. Tickets cost $10 at the door. His recorded material will be available at the show.