From Kanye bossing the Brits with his army of black-clad backup boys to Justin Bieber trolling rock purists with his throwback Nirvana swag, it's a been a strong, strong year for pop visuals. This aesthetic feast has extended to the world of the music promo, with some of 2015's best tunes coming armed with A+ videos featuring even more epic outfits. Here are our favorite seven…