This version is a bit simpler to play then the one already here. 
and if you wish to play it even more simple...just as simple as it can get, then 
play: D Em A7 D throug the whole song. ;-D

Idas sommarvisa - Astrid Lindgren

D (xx0232@1)                   G (320003@1)EmDu (022000@1)ska inte tro det blir sommar
  A7 (x02020@1)                Difall (xx0232@1)inte n?n s?tter fart.
                        G (320003@1)EmP? (022000@1)sommarn och g?r lite somrigt
    A7 (x02020@1)                 Df?r (xx0232@1)d? kommer blommorna snart.
                 D (xx0232@1)       EmJag (022000@1)g?r s? att blommorna blommar
     A7 (x02020@1)            F#mjag (244222@1)g?r hela kohagen gr?n.
    Bm (x24432@1)               G (320003@1)EmOch (022000@1)nu s? har sommaren kommit
     A7 (x02020@1)                   Df?r (xx0232@1)jag har just tagit bort sn?n.

D (xx0232@1)                 G (320003@1)Em (022000@1)Jag g?r mycket vatten i b?cken
  A7 (x02020@1)                  Ds?d?r (xx0232@1)s? det hoppar och far.
                             G (320003@1)EmJag (022000@1)g?r fullt med svalor som flyger
    A7 (x02020@1)                 Doch (xx0232@1)myggor, som svalorna tar.
        D (xx0232@1)          EmJag (022000@1)g?r l?ven nya p? tr?den
     A7 (x02020@1)                F#moch (244222@1)sm? f?gelbon h?r och d?r.
    Bm (x24432@1)                 G (320003@1)EmJag (022000@1)g?r himlen vacker om kv?llen
     A7 (x02020@1)                Df?r (xx0232@1)jag g?r den alldeles sk?r.



D (xx0232@1)                     G (320003@1)EmOch (022000@1)smultron det g?r jag ?t barna
    A7 (x02020@1)                   Df?r (xx0232@1)det tycker jag dom kan f?.
                     G (320003@1)EmOch (022000@1)andra sm? roliga saker
    A7 (x02020@1)                 Dsom (xx0232@1)passar, n?r barna ?r sm?.
            D (xx0232@1)       EmOch (022000@1)jag g?r s? roliga st?llen
    A7 (x02020@1)                F#md?r (244222@1)barna kan springa omkring.
   Bm (x24432@1)                 G (320003@1)EmD? (022000@1)blir barna fulla med sommar
    A7 (x02020@1)                Doch (xx0232@1)bena blir fulla med spring.

note: the F#m chord i play by first taking the chord A and then moving it 
all down one string so that your fingers cover the three lightest strings instead.