Okay, this is right from the book, so it should be pretty accurate.
From the 1993 film 'The Nightmare Before Christmas', by Tim Burton. If you haven't seen 
GO AND DO IT NOW!! Jack's amazing...

Well, this is the first song from the film,and it's pretty hardcore; flatted 5ths and 
accidentals all over the place - good luck! (This chord list scared me to write out, and I 
tend to scare easy...)

 Chords used
Cm 335543
Fm6/C- 688680
Em - 022000
Fm6 - x1x011
G7 - 320001
Bb - 113331
G - 320033
Gm - 355333
Bbm - 113321
C - x32010
Fm - xx3111
Abm - 466444
C#m - x46654
Bm - xx4432
Dm - xx0231
E7 - 020100
F# m - xx4222
D#m - xx1342
Fb - 022100
Eb  - x65343
Ebm -xx1342
Bb7 - x13131
D7 - xx0212
C#m - 022000
G#7/C# -x44544
B - 224442
G#7 - 464544
C#7 - x4342x
Am - x02210
D7 - xx0212
Cm6 - x3x243

Okay, enough on the chords, I'm hearing you scream. Well, maybe not, but you get the drift...
On with the song!

moderately
Cm (x3101x@1)                  Fm6/C
Em (022000@1)                  Fm6/C        G7Cm                Fm6/C
Boys and girls of every age
                                   CmWouldn't (x3101x@1)you like to see something strange?
                  BbCome (x1333x@1)with us and you will see:
                 Cm (x3101x@1)    GThis (320003@1)our town of Hallowe'en!

GmThis (355333@1)is Hallowe'en, this is Hallowe'en!
Bbm (x13321@1)                     C (x32010@1)     FmPumpkins (133111@1)screaming in the dead of night!
AbmThis (133111@4)is Hallowe'en, this is Hallowe'en!
Em (022000@1)                    C#mTrick (x13321@4)or treat, til the neighbours gunna die of fright.

Bm (x24432@1)     Gm (355333@1)        Bm (x24432@1) Gm (355333@1)   BmIt's (x24432@1)our town - Everybody scream
Dm (xx0231@1)            E7In (020130@1)this town of Hallowe'en!

F#mI (244222@1)am the one hiding under your bed
                        D#mTeeth (xx4342@1)ground sharp, and eyes glowing red
F#mI (244222@1)am the one hiding under your stairs
                         D#mFingers (xx4342@1)like snakes, and spiders in my hair!

CmThis (x3101x@1)is Hallowe'en, This is Hallowe'en
Abm (133111@4)                   FmHallowe'en, (133111@1)Hallowe'en, Hallowe'en Hallowe'en!

Abm (133111@4)   Fb    Abm (133111@4)   Fb
In this town, we call home,
Abm (133111@4)                Eb (x43121@3)     Abmeveryone (133111@4)hail to the pumpkin song!
Fm (133111@1)    Db (x43121@1)  FmIn (133111@1)this town, don't we love it now?
Abm (133111@4)                       Bb (x1333x@1)    EbmEverybody's (xx4342@1)waiting for the next surprise,

Fm'Round (133111@1)that corner, man,

Hiding in the trash can,
Abm (133111@4)                      Bb7Something's (x13131@1)waiting now to pounce,
               F#mand (244222@1)how you'll scream!

This is Hallowe'en,

Red and black and slimy green
DmAren't (xx0231@1)you scared?
        BmWell... (x24432@1)that's just fine!

F#mSay (244222@1)it once, say it twice,
Take a chance, Roll the dice
Dm (xx0231@1)                      BmRide (x24432@1)with the moon in the dead of night
F#m (244222@1)      Dm (xx0231@1)    F#m (244222@1)     Dm (xx0231@1)   F#mEvery (244222@1)body scream, everybody scream,
Cm (x3101x@1)           D7 (xx0212@1)       EmIn (022000@1)our town of Hallowe'en!


I am the clown with the tear away face
                     C#mHere (x13321@4)in a flash, and gone without a trace
EmI (022000@1)am the who, when you call 'who's there?'
                      C#mI (x13321@4)am the wind running through your hair

EbmI (xx4342@1)am the shadow on the moon at night,
Bm (x24432@1)                       Abmfilling (133111@4)your dreams to the brim with fright!


Fm (133111@1)                DmThis (xx0231@1)is Hallowe'en, this is Hallowe'en!
Bm (x24432@1)                    GmHallowe'en, (355333@1)Hallowe'en, Hallowe'en, Hallowe'en!

C#m (x13321@4)                G#7/C# (goes with the -y-)
Tender lumplings everywhere,
                              C#mLife's (x13321@4)no fun, without a good scare
                   BThat's (x2444x@1)our job but we're not mean,
               C#m (x13321@4)   G#7In (xx1112@1)our town of Hallowe'en


G#m (133111@4)   E (022100@1)   G#mIn (133111@4)this town, don't we love it now?
Bm (x24432@1)                       C#7 (x4342x@1)   F#mEveryone's (244222@1)waiting for the next surprise
Am (x02210@1)     F/A (x03211@1)      AmSkeleton (x02210@1)Jack might catch you in the back
    Cm (x3101x@1)                           D7 (xx0212@1)     Gm (355333@1)    Bbmand (x13321@1)scream like a banshee make you jump out of your skin!


                              F#mThis (244222@1)is Hallowe'en, won't you please
               Ebmmake (xx4342@1)way for a very special guy?
BbmOur (x13321@1)man Jack is king of the pumpkin patch
F#m (244222@1)                EbmEveryone (xx4342@1)hail to the pumpkin king
DmThis (xx0231@1)is Hallowe'en, This is Hallowe'en
Bbm (x13321@1)                   GmHallowe'en, (355333@1)Hallowe'en, Hallowe'en Hallowe'en!

Gm (355333@1)    Eb (x43121@3)  Gm (355333@1)    EbIn (x43121@3)this town, we call home
m                    D7 (xx0212@1)    GmEveryone (355333@1)hail to the pumpkin song.

(it divides into parts so i'm taking the tune, but you only need to fill in the gaps, by 
to the track,or just going la, or Hallowe'en, at the right moment... :P)


la la la la la
Cm6la (x3121x@1)la la la la
Bmla (x24432@1)la la la la
Cm6 (x3121x@1)       D7la (xx0212@1)la la la la

Wheeeeeeeee! (It says that in the book...)

Gm (355333@1) Wild laughter