What I like about progressive stoner is that it melds groove and intricacy with the distortion coated vibes of stoner metal. It keeps things interesting, helping the often bogged down genres surrounding doom and stoner remember dynamism and variety. Which is exactly what Stonebirds are all about; these guys play a version of progressive stoner which relies on big guitar tones, thick bass and a drawl on the vocals reminiscent more Chris Cornell than Ozzy Osbourne. Their recently released Only Time, while not a trendsetter per se, an interesting take on the track structure that often becomes too stale even in this, more diverse, version of stoner. Check out "Sacrifice" below as an example.