Before his untimely death, Avicii was working on a few tracks with a close collaborator, Carl Falk.

Falk announced that he finished a track, “Heaven,” that the two were working on. “Heaven” features Chris Martin of Coldplay’s vocals.

Yesterday was a strange and emotional day in many ways trying to finishing these songs,” he wrote on Instagram. “It’s not the same producing without you by my side. I miss you hanging over my shoulder doubting every little thing and detail in the song.”

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Related: Avicii’s Death Was Caused By Suicide Via Broken Glass

Avicii took his own life in April while vacationing in Muscat, Oman. According to NME, his family released a statement shortly after news of his death, writing:

“He wanted to find peace. Tim was not made for the business machine he found himself in; he was a sensitive guy who loved his fans but shunned the spotlight. Tim, you will forever be loved and sadly missed. The person you were and your music will keep your memory alive.”

If you or anyone you know is struggling with depression or suicidal thoughts, know that there are other options. You can call the National Suicide Prevention Line at 1-800-273-8255, or check out their website here.