Ether-Return To Earth is a massive 2-disk album that contains nearly two hours of sludge infused, atmospheric instrumental metal. The 13 and a half minute album opener, Quintessence/Core is a beautiful track that contains as much trance-like melody as it does soaring distorted guitars. The nearly 20 minute Stratus/Vapor sounds like a mix of Pelican and Red Sparowes. My favorite track is the 9-minute Keep A Watchful Eye – the heaviest track on the album. This is a very long but rewarding album and it's best listened to at loud volumes. If you're a fan of instrumental post-rock, add this mammoth release to your collection right away!