Standard Tuning.
watch this video you can see everything he plays http://www.youtube.com/watch?v=jZn87TdgD-0
intro/verse
|----------------------------------|
|----------------------------------|
|-------6-------------------6------|
|--3----6----6----3----6----6------|
|--3----4----6----3----6----4------|
|--1---------4----1----4-----------|
chorus 1
(And I will alone, destroy what destroys my own heartbeat)
|---------------------------------|
|---------------------------------|
|-------6------------6-------6----|
|--6----6----6---8---6--6----6----|
|--6----4----6---8---4--6----4----|
|--4---------4---6------4---------|
[ Tab from: https://www.guitartabs.cc/tabs/i/islands/heartbeat_tab.html ]
post chorus 1
|--------------------------|
|-----------------1--------|
|--8----6------------------|
|--8----6----6----2--------|
|--6----4----6----3--------|
|------------4-------------|
verse
chorus 2
|---------------------------------|
|---------------------------------|
|-------6------------6-------6----|
|--6----6----6---8---6--6----6----|
|--6----4----6---8---4--6----4----|
|--4---------4---6------4---------|
chorus 2 continued
|--------------------------------------------------|
|---------------------------------------------1----|
|-------6--------------6--------6---6--------------|
|--6----6----6----8----6----6---6---6----6----2----|
|--6----4----6----8----4----6---8---4----6----3----|
|--4---------4----6---------4------------4---------|
verse
end
(repeat)
|------------|
|------------|
|-------6----|
|--6----6----|
|--6----4----|
|--4---------|