This Heat (often referred to as Blue and Yellow) is the debut studio album by English experimental rock band This Heat. Recorded between 1976 and 1978, it was released in September 1979 by record label Piano.
Dean McFarlane of AllMusic wrote: "There are very few records that can be considered truly important, landmark works of art that produce blueprints for an entire genre. In the case of this album, it's clear that this seminal work was integral in shaping the genres of post-punk, avant rock and post-rock, and like all great influential albums, it seemed it had to wait two decades before its contents could truly be fathomed." Steven Grant of Trouser Press wrote: "Though insolent and withdrawn, the music is adventurous and, in its own peculiar way, engrossing." Peter Marsh of BBC Music called it "one of the strongest and strangest debut records of all time. Seemingly born out of the fervent experimentalism of the UK post-punk scene, This Heat's beautifully skewed mix of improvisation, lo-fi tapework and stretched, ghostly songform actually had more in common with maverick longhairs like Henry Cow and Faust. [...] The music here seethes with an economy, invention and power that still shocks a quarter of a century on."