YSIV is the fourth studio album by American rapper Logic, released on September 28, 2018, by Visionary Music Group and Def Jam Recordings. The album art, featuring a mugshot of Logic, is stylized similarly to the famous mugshot of Frank Sinatra and reminiscent of the artwork for the mixtape Young Sinatra, released in 2011. The album serves as a sequel to the mixtape Young Sinatra: Welcome to Forever, released in 2013, and is the fourth and final installment of the Young Sinatra series. The album is notable for being credited as an album in the Young Sinatra series, as the former 3 were released as mixtapes. It features guest appearances from all living members of Wu-Tang Clan, Wale, Jaden Smith, Ryan Tedder and Hailee Steinfeld, among others.