The harmonica solos in this song all follow a basic pattern. I've tabbed out the first big solo (starts at around 2 mins 58 seconds into the song).

Neil plays a pretty loose style rather than clean single notes, but if you aim for the following notes then you'll be in the right place.

SOLO (02:58):

A: -3   3   -3  -3   -3  -3   3

B: 4   4   -3   3  3     4    4   -3   -3     3

C: -3   -3    3   3   -3  -3   -3  -3   3

D: 4   4   -3   3  3     4    4   -3   3     3

E: -3   -3    3   3   -3  -3   -3  -3   3-------

F:  (1 bar rest)        4    -3   -3     3   3   3

G: -3   -3    3   3   -3  -3   -3  -3   3