This is the melody the phantom sings starting with "Past the point of no return" 
(skipping the intro parts starting with "You have come here"), which is repeated 
throughout the song (apart from Christine's intro - starting with "You have brought me")

The time signature is 6/8 but just listen to the song to figure out how long to play which note

  
  | Fm                   | C7/F                 | Fm                   | F                    |
e -----------------------|----------------------|----------------------|----------------------|
B -----------------------|----------------------|----------------------|-------------------4--|
G -----------------------|----------------------|----------------------|---2--5---------------|
D --------------3--2--3--|-5----------6--5------|-------------3--5--3--|----------------------|
A ---3-------------------|----------------------|----------------------|----------------------|
E -----------------------|----------------------|----------------------|----------------------|

  | Past    the point of | no        re-turn    |         no back-ward | glanc-es         Our |

   
  | Db                   | Eb7                  | Ab                   | C7b9              C  |
e -----------------------|----------------------|----------------------|----------------------|
B ----4----6-------------|------------------4---|----------------------|----------------------|
G -------------6----5----|--3-------5---6-------|--5-------------------|----------------------|
D -----------------------|----------------------|----------------------|----------------------|
A -----------------------|----------------------|----------------------|----------------------|
E -----------------------|----------------------|----------------------|----------------------|

  | games  of  make be-  | lieve    are at an   | end                  |                      |
 

  | Past  all thought of | "if"     or "when"   |           no use re- | sist-ing          a- |
  | ban-don thought and  | let  the dream de-   | descend              |                      |



  | Ab7                  | Db                   | Gb         Gb7       | Cb                   |
e -----------------------|----------------------|----------------------|----------------------|
B -----------------------|----------------------|----------------------|----------------------|
G ----------5----5----5--|--5----6----------1---|--3------3--3----3----|--3----4--------------|
D -----------------------|-------------3--------|----------------------|------------4---------|
A -----------------------|----------------------|----------------------|-----------------6----|
E -----------------------|----------------------|----------------------|----------------------|

  |        What rag- ing | fire shall flood the | soul? What rich de-  | sire un- locks it's  | 


  | Cbm                  | Gb/Db                | Gm7b5                | C                    |
e -----------------------|----------------------|----------------------|----------------------|
B -----------------------|----------------------|----------------------|----------------------|
G --------------4----4---|--6-----3-------------|----------------------|----------------------|
D ---------4-------------|-------------4--------|----------------------|----------------------|
A ---4-------------------|------------------4---|--4-------------------|--3-------------------|
E -----------------------|----------------------|----------------------|----------------------|
 
  | door, What sweet se- | duct-  ion lies be-  | fore                 | us?                  |


  | Fm                   | C7/F                 | Fm                   | F                    |
e -----------------------|----------------------|----------------------|----------------------|
B -----------------------|----------------------|----------------------|-------------------4--|
G -----------------------|----------------------|----------------------|---2--5---------------|
D --------------3--2--3--|-5----------6--5------|-------------3--5--3--|----------------------|
A ---3-------------------|----------------------|----------------------|----------------------|
E -----------------------|----------------------|----------------------|----------------------|

  | Past    the point of | no        re-turn    |           The fi-nal | thres- hold     What |

  | Db                   | Eb7                  | Ab        Ab7        | Db                   |
e -----------------------|----------------------|----------------------|----------------------|
B ----4----6-------------|------------------4---|----------------------|----------------------|
G -------------6----5----|--3-------5---6-------|--5---------------5---|--5----6-----------1--|
D -----------------------|----------------------|----------------------|-----------3----------|
A -----------------------|----------------------|----------------------|----------------------|
E -----------------------|----------------------|----------------------|----------------------|

  | warm  un- spo- ken   | se-    crets will we | learn            be- | yond the point   of  |

  | Gb         C7        | Fm                   |
e -----------------------|----------------------|
B -----------------------|----------------------|
G --3--------------------|----------------------|
D --------------2--------|--3-------------------|
A -----------------------|----------------------|
E -----------------------|----------------------|

  | no         re-       | turn                 |