The Blue Slide Park singer was due to kick off his trek in New Zealand at the end of December (15) before flying over to Perth, Australia for a New Year's Eve (31Dec15) festival and dates in Melbourne, Sydney and Brisbane in January (16).

Miller announced the news on Twitter.com, telling fans he is exhausted from touring and needs to rest.

He writes, "After over 90 days on the road... I have to cancel New Zealand and Australia. I am so sorry to all my fans out there. My voice is gone. My body is exhausted, and I can not guarantee you guys an 100 (sic) per cent performance. I don't want to give you anything less than my best.

"I need to rest and get myself healthy. I am not cancelling, but postponing, you can bet your bottom dollar I'll be back soon... I haven't cancelled anything in 5 years, but I found out I was human. F**k. I thought I was a super hero... I'm not giving up on that theory."