Canadian singer Johnny Orlando is a pretty big deal. When he was 8 years old, his big sister asked their parents if she could put a video of Johnny singing a song on YouTube. Fast forward a couple of years, and Johnny, who turned 15 last month, has amassed a following of over 10 million fans across his social media accounts, and there are tens of millions of listens on all of his songs on YouTube. He is frequently joined on his songs by Mackenzie Ziegler and in December the pair of them played a sold-out show at the Academy in Dublin. Róisín Ingle went along to see what all the fuss was about - she spoke Johnny and Mackenzie, as well as Johnny's dad Dale Orlando about his son's extraordinary fame.