Marvin Humes kicks things off ready for our most INSANE line-up ever!
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One Direction, Ariana, Avicii & More! The MUST-SEE Pictures From Capital's Summertime Ball 2015
![Marvin Humes Live Summertime Ball 2015](https://assets.capitalfm.com/2015/22/marvin-humes-live-summertime-ball-20151-1433602189-view-0.jpg)
20. Marvin Humes kicks things off ready for our most INSANE line-up ever!
Picture: Joe Okpako