This is what we found on Wikipedia regarding the We Lost The Sea:

We Lost the Sea are an instrumental post-rock band from Sydney, Australia, formed by friends from multiple bands that had dissolved in 2007 from the outer west Sydney suburb of Campbelltown. The current lineup consists of Mark Owen, Matt Harvey, Mathew Kelly, Kieran Elliott, Alasdair Belling, and Carl Whitbread.

The band's third studio album, Departure Songs, gained them widespread acclaim within the post-rock and metal scenes around the world. They have reached notable success internationally for their live performances. The band is currently signed to the Australian independent label Bird's Robe Records, which is distributed through MGM in Australia and independently worldwide.