when did the singles reach number one?
3 january 2014, 10 january 2014, 17 january 2014, 24 january 2014, 31 january 2014, 7 february 2014, 14 february 2014, 21 february 2014, 28 february 2014, 7 march 2014, 14 march 2014, 21 march 2014, 28 march 2014
and who was the performer of each single?
avicii, avicii, bruce springsteen, bruce springsteen, avicii, christer sjogren, christer sjogren, avicii, avicii, avicii, avicii, takida, yohio
of those performers, which dates did ed sheeran reach number one?
17 january 2014, 24 january 2014, 31 january 2014, 7 february 2014, 14 february 2014, 21 february 2014, 28 february 2014
and which of those dates was the earliest?
17 january 2014