Alone, it is like the trademark of Marshmello besides his helmet. Everyone get to know him with this track and that gave him so much in a little period of time. Alone was ranked no.1 on over many countries around the world and still people fall in love with this record.
This i still a huge milestone because there only less than 200 videos which cross this limit. And with this, Marshmello becomes 1 of 20 people to have 20 Million subscribers on youtube. So You Tube, better have a 20M play button soon because the boys getting there.