Late Rapper Mac Miller Releases Posthumous Single

 (CNN) -- It's a bittersweet moment for the friends, family and fans of the late rapper Mac Miller.

Nine months after his death, R&B group Free Nationals released the single "Time" featuring Miller.

Miller died of an accidental overdose in September at age 26. The drugs in Miller's system included fentanyl, cocaine and ethanol, the Los Angeles County Department of Medical Examiner-Coroner found.

MANCHESTER, ENGLAND - JUNE 04: NO SALES, free for editorial use. In this handout provided by 'One Love Manchester' benefit concert (L) Mac Miller and Ariana Grande perform on stage on June 4, 2017 in Manchester, England. Donate at www.redcross.org.uk/love (Photo by Getty Images/Dave Hogan for One Love Manchester)

He dated Ariana Grande for two years before the couple split in 2018.

As a teenager, Miller started his career in music by putting out mixtapes in his native Pittsburgh.

INDIO, CA - APRIL 21: Mac Miller performs at the Sahara Tent during day 1 of the 2017 Coachella Valley Music & Arts Festival (Weekend 2) at the Empire Polo Club on April 21, 2017 in Indio, California. (Photo by Frazer Harrison/Getty Images for Coachella)

In 2012, his first album, "Blue Slide Park," became the first independent debut to hit the top of the Billboard charts in more than 16 years. Miller was 19.

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