Marvin Humes opened the Summertime Ball with an Iconic DJ Set. This image appears in the gallery:Summertime Ball 2018 Live: The Best Photos From On Stage At Wembley 88. Marvin Humes opened the Summertime Ball with an Iconic DJ Set. Yaaaas Marv, spin the decksssss! Picture: Joshua Atkins 91 images See the full gallery: Summertime Ball 2018 Live: The Best Photos From On Stage At Wembley