[2] "Jugg-a-Jug Song"[nb 1] and "Midnight Sun" were covers of unreleased demos recorded by New Zealand guitarist Doug Jerebine under his stage name, Jesse Harper.

The original release stated that the album's closing track, a cover of Rory Gallagher's "Railway and Gun", was recorded live at Auckland's Bo-Peep Club, where the band had a residency.

Two singles were released from the album: an edited version of "Black Sally" b/w "Tomorrow", and an alternative mix of "Midnight Sun" b/w "Idea" (a non-album track composed by Doug Jerebine and also known as "Keep Cool").

[4] Australian band Seedy Jeezus cover Black Sally on a Live to Air broadcast on 106.7 PBS, Melbourne, Australia ( Dec 9, 2015).

The guitarist later in an interview talks about his love for Human Instinct and how he drove Seedy Jeezus crazy on tour playing them all the time.