i_O, the DJ and producer born Garrett Falls Lockhart, passed away suddenly in November 2020. His death came after a surge of internet attention for “Violence,” his 2019 collaboration with Grimes — the following year, i_O released a triology of EPs called 444, including one made with Canadian pop singer-songwriter Lights called AM 444. Today, i_O’s estate and Lights are releasing Warehouse Summer, the first and likely final posthumous album recorded during i_O’s lifetime.

The project’s 14 tracks are constructed on a foundation of progressive house with elements of techno and rave peeking in. “This is a body of work that I’m immensely proud of and am very emotionally connected to,” Lights said in a statement via Pitchfork. “Garrett was endlessly talented and he inspired me to give my all and be my best. It’s safe to say making this album with him was life-changing. I hope you immerse yourself in it, there is a lot to feel in Warehouse Summer.”

Lockhart’s death was caused by a “sudden and fatal arrhythmia” brought on by an autoimmune disorder called Hashimoto’s Thyroiditis. He was 30 years old. Below, read a statement from Lockhart’s family on Warehouse Summer.