It begins with an:

A#

The little armonics are

G# F# F

And the tones of the bass are

A# A# A# A#  F# F# F# F#  F F C# C# and then back to the first F

The verses are very simple there are just:

A#

The chorus is:

A# A# A# A#  F# F# F# F#  F F C# C#

And the little string that sound before the final chorus are:

C# C  F  F#  F  F#  F