Prior to writing the mixtape, Agust D spent the bulk of his time listening to his previous, self-titled mixtape. The rapper stated that he "always liked making music that contrasts with my previous songs ... to show there is a beauty in contrasting things".
D-2 is, according to Agust D, "a documentation of myself as a 28-year old", and "a documentation of myself from 2016 onwards". He has said that the mixtape is focused more on talking about the present, comparing it to his last mixtape,
Agust D, which was more focused on telling the past. The title song "Daechwita" has also been drawn from the themes of traditional Korean storytelling and music which, according to the artist, developed naturally into the
pansori storytelling and
kkwaenggwari percussion. These themes developed from wanting to sample the sound of a real
daechwita, a piece of traditional Korean military music. These
daechwita elements are clearly audible in the song of the same name and its music video, released on the same day as the mixtape. According to Agust D, the many questions the album raises about society are for the listener to answer, and he is merely putting forth the question.
D-2 features collaborators such as
MAX, NiiHWa, and
Kim Jong-wan as co-writers and singers, along with
RM, who is his co-member in BTS. The large-scale collaboration present in the album is not new to the rapper, as he has previously collaborated through both BTS and himself with artists such as
Halsey and
IU within the year prior to the release of the mixtape. == Name and release ==