To reiterate,
Asus 2 is just a A with an open d string which you hammer on the 2nd fret(* is the hammer on sign).
Asus 4 is the same as a A except the d string is played on the 3rd fret.
Amaj9 comes up later and it's like a A except the middle note is on the a string not d
This is how Mitch plays it himself.
Asus2 * Asus4 x3 A
Asus2
i'll start it off by saying i'm not one for the complaining
Asus4
you wouldn't know it from my writing
A
you wouldn't know it from my songs
Asus4 Asus2 *
but i am different, i am free
Asus4 Asus4
i am what you need
Asus2
A Asus2
but oh my god, i miss you more than i thought was possible
Asus4 Amaj9
i understood the obstacles but you could have tried more
A Asus2
because sometimes it seems, i need a mom more than i need to eat
Asus4 A
so i didn't eat and i didn't sleep, i'd go all day without a bite
Asus2 *
and that's not my fault
Asus4
that's not my fault
Amaj9
A Asus2
and i'll admit sometimes my chest gets so tight that i throw fits
Asus4
you said you'd always be there, where are you through all of this?
A Asus2
because this is hard, this is way harder than i thought
Asus4
i'm so concerned about the ending that i don't even know the plot
A Asus2 A
except for i am different, i am free
Asus4
i am what you need
A Asus2 A
i am different, i am free
Asus4
i am what you need
A Asus2
so you think of all the things that make you sad
Asus4
and don't include them in your better half
A Asus2 Asus4
because i'm not like you
A Asus2 Asus4
i don't find happiness in a meaningless existence
A
i don't know what i'm going to do
Asus2 A
but i am different, i am free
Asus4
i am what you need
A Asus2
and yeah, i believe that there's a god
Asus4
i believe that there is something out there other than my thoughts
A
i believe it was never science against religion
Asus2
it wasn't poor against wealth
Asus4
It was always me against myself
A
and i'm so scared who's going to win
Amaj9
because i wake up feeling so shitty
A
it's been so long since you've been with me
Asus2
i don't know where this old body's going to go
or my soul
A Asus4
but i know i am different, i am free
Asus2 A
i am what you need
A Asus4
i am different, i am free
Asus2 Asus4
i am what you need