Instrumental post-rock band Caspian, who played this past May’s Boston Calling and were recently celebrated with a community show in their hometown of Beverly, suffered a loss over the weekend when bassist Chris Friedrich passed away unexpectedly. In the photo above, Friedrich is second from the left.

Caspian, a powerful and emotionally-charged quintet, will pay tribute to Friedrich this weekend, when they perform live at the Engine Room in Manchester, New Hampshire, for a show that the bassist helped organize. The show was originally a fund raiser for a friend of Friedrich’s, who needed help raising money for a lung transplant.

Details surrounding Friedrich’s death are not yet available. Caspian posted this message to their Facebook profile this morning:

We write to you today with heavy hearts and indescribable sadness to tell you that our bass player, Chris Friedrich, died unexpectedly Sunday afternoon. We have lost a close friend, a true brother, and a presence that can never be replaced in any of our lives. Chris epitomized the heart and soul of Caspian, and in our own ways — both individually and collectively — dedicate ourselves to honoring his memory. We ask for privacy. Thank you for your thoughts and prayers during this difficult time. We will be paying tribute this Saturday (8/31) to Chris by performing at The Engine Room in Manchester, NH. This is a benefit show for a friend of Chris’s who is seeking funding for a lung transplant. Chris was instrumental in putting this show together, and is the only way we know how to honor his memory at this time. You can find more information in our events section for this performance. We love you all so very much.

Caspian released their third studio album, Waking Season, in September 2012. Here are a few songs from that incredible record.