12 artists.
Hozier - October 10, 2014
Years & Years - March 2, 2015
Becky G - July 4, 2014 (First 3%)
DJ Snake - March 17, 2014 (First 7%)
Ariana Grande - September 2, 2013 (First 3%)
Mark Ronson - November 21, 2014 (First 5%)
Lorde - August 17, 2013 (First 4%)
Meghan Trainor - July 28, 2014 (First 1% )
Fetty Wap - March 17, 2015
Charli XCX - December 12, 2013 (First 3%)
A Great Big World - November 28, 2013 (First 2%)
Iggy Azalea - October 17, 2013 (First 3%)

Baaur - January 16th, 2013 (first 1%)



I remember I had Harlem Shake on a dance music playlist about six weeks before it blew up. That counts for something I guess.