Great song, but obviously not played in a guitar. Still, here's the tab! :)
(the drop D tuning is only for the bass, you can play the flute/bagpipes part
without drop D tuning)
Bass part - repeat trough the whole song
G|--------|--------|--------------|
D|--------|--------|--------------|
A|--------|--------|--------------|
D|--5--0--|--5--0--|--5--3--1--0--|
Main Riff - this is the most repeated part in the beggining played by the bagpipes
(and hurdy-gurdy)
e|-----------------------------------------------|----------------------------------------------|
B|-----------------------------------------------|----------------------------------------------|
G|---7-7--5-7-8--8-7-5------5-5--7-5-------------|--7-7--5-7-8--8-7-5------5-5--7-5-------------|
D|-5--------------------7-8----------8-7-5-7-8-7-|5--------------------7-8----------8-7-5-7-8-5-|
A|-----------------------------------------------|----------------------------------------------|
D|-----------------------------------------------|----------------------------------------------|
[ Tab from: http://www.guitaretab.com/e/eluveitie/228740.html ]
And here's the other parts
e|----------------------------------------|-----------------------------------------|
B|----------------------------------------|-----------------------------------------|
G|--------------------5-5--7-5------------|--------------------5-5--7-5-------------|
D|-5---5-7-5--5---5-8----------8-7-5-7-8-5|-5---5-7-5--5---5-8----------8-7-5-7-8-7-|
A|---8----------8-------------------------|---8----------8--------------------------|
D|----------------------------------------|-----------------------------------------|
e|-------------------------------------|----------------------------------------|
B|--------------6-8--8-6---------------|--------------6-8--8-6------------------|
G|-----5-7--5-7----------8-7--5---5----|-----5-7--5-7----------8-7--5---5-------|
D|-5-8--------------------------7---8-7|-5-8--------------------------7---8-7-5-|
A|-------------------------------------|----------------------------------------|
D|-------------------------------------|----------------------------------------|
e|--------------------------|-------------------------|
B|--------------------------|-------------------6-----|
G|-7-8-7-5------5----5-7----|--7-8-7-5------5-7---7-5-|
D|---------7--7---7------8--|----------7--7-----------|
A|--------------------------|-------------------------|
D|--------------------------|-------------------------|
e|--------------------------|---------------------------|
B|--------------------------|---------------------------|
G|-7-8-7-5------5----5-7----|--7-8-7-5------5-7-5-------|
D|---------7--7---7------8--|----------7--7-------8-7-5-|
A|--------------------------|---------------------------|
D|--------------------------|---------------------------|