i think the acoustic guitar in the background start with:
(C7+???)
E||--0-------0-------0-------0-------|
B||----0---0---0---0---0---0---0---0-|
G||------5-------5-------5-------5---|
D||----------------------------------|
A||----------------------------------|
E||----------------------------------|
and it changed, but i didn't figure this out yet.
the lead electric guitar playing (scale: E minor):
[ Tab from: https://www.guitartabs.cc/tabs/c/camel/sanctuary_tab.html ]
E||---------------------|-----------------------|------------------------|
B||---------------------|-----------------------|----------10--10--------|
G||--9--------12v-------|------12----9----------|--11--------------------|
D||---------------------|-----------------10----|------------------------|
A||---------------------|-----------------------|------------------------|
E||---------------------|-----------------------|------------------------|
------------------------|------------------------|-----------------------|
------10----------------|------------------------|-----------------------|
------------12----11----|----------11--12--------|---------11--12--------|
------------------------|--10--------------------|--9--------------------|
------------------------|------------------------|-----------------------|
------------------------|------------------------|-----------------------|
--------------------|-----------------------*-----------|---------------------|
--------------------|-----------------------*-----------|---------------------|
--12----------------|--9--------------------*--7--------|--9--------12v-------|
--------------------|-------10--------------*-----------|---------------------|
--------------------|-------------12--------*-----------|---------------------|
--------------------|-----------------------*-----------|---------------------|
-----------------------|------------------------|------------------------|
-----------------------|----------10--10--------|------10----------------|
------12----9----------|--11--------------------|------------12----11----|
-----------------10----|------------------------|------------------------|
-----------------------|------------------------|------------------------|
-----------------------|------------------------|------------------------|
------------------------|-----------------------|--------------------|
------------------------|-----------------------|--------------------|
----------11--12--------|---------11--12--------|--12----------------|
--10--------------------|--9--------------------|--------------------|
------------------------|-----------------------|--------------------|
------------------------|-----------------------|--------------------|
-----------------------*-----------|----------------------------|
-----------------------*-----------|----------------------------|
--9--------------------*-----------|----------------------------|
-------10--------------*--9--------|--10--------12--12/14-------|
-------------12--------*-----------|-------------------------12-|
-----------------------*-----------|----------------------------|
--------------------|-----------------------|-----------------------|
--------------------|-----------------------|-----------------------|
--------------------|-----------------------|-----------------------|
--------------------|--10------9------------|-----------------------|
--12----------------|-------------12--------|--12----9--------------|
--------------------|-----------------------|-------------10--------|
note: the bar that marked with * are 2 quarters.
bye