You can play E or Bsus4 x24400 instead of B in the verses (if it is hard for you).
Lyrics in parentheses are 'echoes' of the main line.
[Verse 1]
E
Once in a while
You end up in a town
A
Its doors open up for you
E
Step outside to look up and see
A
The sky’s looking back at you
B A
The lights rain down
[Verse 2]
E
Once in a while
You get a little help
A
You least expected too
E
Look in the mirror
A couple times you see
A
If all of it is true
B
And your mind’s
A
On a bed of clouds
[Chorus]
E
Once in a Long, Long While (Once in a Long, Long While)
A
(Once in a Long, Long While) (Once in a Long, Long While)
E A
[Verse 3]
E
Once in a while
You get a little lost
A
In the fault between the trees
E
Stumbling out upon the waiting arms
A
Of the woman of your dreams
B
And your love
A
Comes raining down
[Chorus]
E
Once in a Long, Long While (Once in a Long, Long While)
B A
(Once in a Long, Long While) (Once in a Long, Long While)
E
Once in a Long, Long While (Once in a Long, Long While)
B A
(Once in a Long, Long While) (Once in a Long, Long While)
E
Once in a Long, Long While (Once in a Long, Long While)
B A
(Once in a Long, Long While) (Once in a Long, Long While)
E
Once in a Long, Long While (Once in a Long, Long While)
B A
(Once in a Long, Long While) (Once in a Long, Long While)
E B A
Once in a Long, Long While
[Outro]
E B A x2