Left-field house producers tend to ignore at least one major chapter of the traditional deep-house production playbook, whether doing away with the 4/4 rhythmic structure, the need for hand percussion, or the emphasis on the beat. If the deviation in the production can’t be pinned down to a specific quality, there remains something certifiably askew. There’s no single sound that typifies left-field house. It can be abstract and grimy like Theo Parrish, whose productions often favor low BPMs and samples from obscure jazz recordings, all the while retaining a pronounced 4/4 rhythm. It can come from house’s back door, through post-disco R&B and Italo disco influences, like Metro Area -- a duo who regularly bypasses the relentless 4/4 thump completely. Or it can be equally experimental and contemporary like Herbert, whose concepts and methodologies (sampling sources that range from kitchen utensils to biological functions) occasionally overshadow his accomplishments.