This the the Adventure Time theme song as sung by Ashley Eriksson - http://www.youtube.com/watch?v=88BZK9T2EDM

Chords and Lyric found here - http://www.yourchords.com/316232/Adventure-Time/Island-Song-Chords/

 A

 D    G    Bm  
 Come along with me
     D      A        G  
 To a town beside the sea
       Bm                 G  
 We can wander through the forest
    D           A  
 And do so as we please

 D     G    Bm  
 Come along with me
     D       A     G  
 To a cliff under a tree
            Bm             G  
  Where we'll gaze upon the water
      G   A       D  
 As an everlasting dream

 F#7         G  
 All of my affections
            A      D  
 I give them all to you
 F#7           G  
 Maybe by next summer
   D                      A  
 We won't have changed our tunes

 D    G  Bm  
 I still want to be
        D      A        G  
 In this town beside the sea
 D             G  
 Making up new numbers
    G         A    D  
 And living so merrily

 F#7           G  
 All of my affections
            A      D  
 I give them all to you
     F#7             G  
 I'll be here for you always
    E7            A  
 And always be for you

 D    G    Bm  
 Come along with me
     D      A        G  
 To a town beside the sea
       D                  G  
 We can wander through the forest
    D     A     Bm  
 And do so as we please
 G         A    D  
 Living so merrily