From JC's TuneFinder:

X: 1
T:The Flower of Scotland
C:Roy Williamson, The Corries
Z:ABC by Thornton Rose, January 2002
N:Original score in F.
M:3/4
L:1/4
F:http://trillian.mit.edu/~jc/music/abc/mirror/abc/FlowerOfScotland.abc 2006-12-07 14:17:51 UT
K:A
c | c2 B | A3 | E3- | E2
w:Oh, Flower of Scot-land,_
E | A2 c | B3- | B2 B | A2 B | c3- | c3- | c2
w:When will we see_ your like a-gain,__
c | d c d | e3 | A3- | A2 c | B2 B | B A B | c2
w:That fought_ and died for_ your wee bit Hill_ and Glen,
d | c2 B | A3 | E3- | E2 c | d c d | e3 | A3- | A2
w:And stood a-gainst him,_ Proud Ed_ ward's ar-my,
c | d c B | (c2 B) | A3- | A2 A | =G2 B | A3- | A3- | A2 |]
w:And sent_ him home_ ward_ tae think a-gain.__
%
W:2. The hills are bare now,
W:And autumn leaves lie thick and still,
W:O'er land that is lost now, which those so dearly held,
W:And stood against him, Proud Edward's army,
W:And sent him homeward tae think again.
W:
W:3. Those days are passed now
W:And in the past they must remain
W:But we can still rise now, and be the nation again
W:That stood against him, Proud Edward's army
W:And sent him homeward tae think again.
W:
W:4. (Repeat 1)

For more versions of the tune, check out: JC's TuneFinder