If there is one figure which looms large over every moment of Swim Against The Tide, the new EP by pop songstress The Japanese House, it is that of Imogen Heap. With its glitchy beats, emphasis on textured electronics and distinct English twang running through a vocoder, the spectre of the former Frou-Frou vocalist is consistent and undeniable. While the disc never actually manages to escape from Heap’s shadow, it’s still a surprisingly solid slice of ambient dreamy music. Japanese House frontwoman Amber Bain has described her output as “a sad little puppy listening to Beyoncé to cheer itself up”…