Music Fifth Harmony and Fetty Wap take us to the beach for ‘All In My Head (Flex)’ music video Samuel McManus Jun 23, 2016 0 We've been listening to '7/27' on repeat and waiting patiently for this moment. The music video for Fifth Harmony's 'All In My Head (Flex)' - a collaboration with Fetty Wap - has finally arrived and it is making us SO excited…