Black Fingernails is a last released collaboration between Lil Peep and SOWHATIMDEAD,
Lil Peep and lil skil. The song was produced by Dietrich. It was released on 30 December 2015 after Peep left Heartbreakk Clubb and moved to LA to join SCHEMAPOSSE (6 November 2015).

Not long ago, the second version of this song, featuring Lil Soda Boi and Lil Lotus, surfaced on Soundcloud and caused confusion. SOWHATIMDEAD, the primary artist behind the song, replied to a fan who questioned him about it and confirmed that it was an unofficial fan-made remix. Lil Soda Boi and Lil Lotus were never part of it: