How popular is Alan Walker around the world?

I have never heard of Alan Walker, but after researching about him, I have learned that he must be pretty popular and famous around the world because he has been supporting some well-known musicians and singers. These include Rihanna on her Anti World Tour back in 2016 and Justin Bieber on his Purpose World Tour back in 2017.

He has had a large number of views on his youtube channel including over four hundred million views for his music video. Some of these videos include the single “Sing Me to Sleep” and “Faded.” It seems that his popularity continues to grow since his number of views on youtube continues to grow as well with his single called “Alone.” He had over seven million views.