9 ZZ Ward
10 Taylor Swift
12 Beck
14 a-ha
16 Leona Lewis
17 Shawn Mendes
18 Simply Red
20 Hozier
21 Echosmith
22 Rob Thomas
23 Nate Ruess
24 Oh Honey
28 Maroon 5
30 Karmin
31 Mika
32 Daya
33 Pentatonix
34 Muse
35 Andy Grammer
36 Mika
38 Rixton
40 Sia