Bass doesn't come in until half-way through the verse with...
G|----------------------------------------------------------------|
D|----------------------------------------------------------------|
A|----------------3333333333333333----------------3333333333333555|
E|0000000000000000----------------0000000000000000----------------|
G|-----------------------------------------------------------------|
D|---------55555555------------------------55555555----------------|
A|777777777--------333333333333355577777777--------3333333355555555|
E|-----------------------------------------------------------------|
[ Tab from: https://www.guitartabs.cc/tabs/b/bloc_party/sunday_btab.html ]
Chorus
G|----------------------------------------------------------------|
D|------------------------55555555--------------------------------|
A|333333335555555577777777--------3333333355555555----------------|
E|------------------------------------------------0000000033333333|x2
In the second verse, it is exactly the same as the first verse, the bass rests for the
bit then comes in with the same part.
Chorus
Middle Bit
G|------------------------------------------------------------------|
D|------------------------------------------------------------------|
A|3-------5-------7-------10-------3-------5-------7-------10-------|
E|------------------------------------------------------------------|
G|-----------------------------------------------------------------|
D|---------------------------------------------------------55555555|
A|3-------5------------------------3-------5-------7---------------|
E|----------------0-------3----------------------------------------|
You then play the chorus until 4.35, when the bass stops and there is just the guitar
and Kele singing "I love you in the morning" until the end of the song.