They explain, "Attention to our highly esteemed and very patient Australian fanbase: It brings us no pleasure to announce that we are not able to play the Soundwave festival this year. We've been waiting years to see you, YEARS and this was going to be such a great line up.

"We had every intention of coming to you and take full responsibility for any disappointment. The good news? A child has been born to the Rival Sons family. Even though we collectively thought it to be sufferable, we've found that taking our brother away from his wife and newborn so soon ultimately defies our personal ethics as a band.