Bass tab to Milk which can be found as a hidden track at the end of The 1975's song, 
You. Pattern can figured out by listening to the song.

Intro

"Straight lines..."

G|--------------------------------------------------------------------|
D|--------------------------------------------------------------------|
A|--------------------------------------------------------------------|
E|--13-13-13-13-13-13-/-13-13-13-13-13-13-/-6-6-6-6-6-6-/-6-6-6-6-6-6-| (x2)

Verse/Chorus

"She says the bleeding's incidental..."

G|----------------------------------------------------------------|
D|----------------------------------------------------------------|
A|----------------------------------------------------------------|
E|--13-13-13-13-13-13-/-3-3-3-3-3-3-/-6-6-6-6-6-6-/-6-6-6-6-6-/-8-|

Repeat throughout song until Outro.

Outro

"Yeah, she's doing it all the time..." - Start playing outro after this line is repeated 
for third time.

G|------------------------------------------------------------------|
D|------------------------------------------------------------------|
A|------------------------------------------------------------------|
E|--13-13-13-13-13-13-13-13-13-13-13-13-13-13-13-13-13-13-13-13-13--|

Repeat until song ends.

This is my first bass tab so I hope its ok :)