Hitmaking duo Da Internz (Rihanna, Big Sean) suffered a tragic loss when their artist Aaron Michael Cox lost his battle with cancer last Friday.

The 22-year-old singer-songwriter was diagnosed with stage 4 testicular cancer in June. It quickly spread to his lungs and was so far along that Cox never had the chance to start chemotherapy.

The future was bright for Cox, who had worked with artists including Nas and Ludacris. He had just closed a publishing deal and was in the process of signing to a major label.

His debut single “Walk Away” made its debut in April to rave reviews.

A tribute celebrating his life will be held tonight at 6:30 p.m. at the Universal Music Publishing Group offices in Santa Monica. All family, friends, and supporters are welcome.