This song is amazing. Standard tuning (EADGBE). First bit (the higher-up part): E:------------------------|------------------------| A:------------------------|------------------------| D:------------------------|------------------------| G:--------8s10------------|----10-10-10s8-8-8s7----| B:---------------11-------|------------------------| E:------------------------|------------------------| E:------------------------|----------------------------| A:------------------------|----------------------------| D:------------------------|-------------------------8--| G:--------8s10------------|----10-10-10s8-8-8s7--------| B:---------------11-------|---------------------8p6----| E:------------------------|----------------------------| Second bit: E:------------------------| A:------------------------| D:--8s10--5---5s3--3--3s8-| G:------------------------| B:------------------------| E:------------------------| And that's it! Just repeat those two parts. Make sure to add lots of reverb to get that lovely ethereal feeling.