Python 781 731 605 580 Chars

s="e |nd|-We| a|-(Ooh|N| what|ive| go|ay it-|I|er|G|o |make5 |D| th| othH |A| tF|ing |nna |tell|'s been|'rS|-You|-N4| know|L5 up|PR | you|evHK>| how I'm feeling-|O, g7)|O)9gL, n4gL-(G7)|-I just wa>=53Gotta EuRHstaR-.|Q've8n eachBfor sFlong:r heart<Pch?but:;toFshy@sJInsidSwSboth8M<K?onQ8CSgame6we;go>plJ|9g79let5 down9runProuR6desHt59Ecry9sayKodbye9=P lie6hurt5-|\n|Q;nFstrangHs@love:8CSrules6sFdFI-A full commitment'sM I'mCink?of: wouldn't getCis fromPnyBguy0/AR if5Psk me3Don't = me5;[email protected]/0..";i=83
while i>44:x,s=s.split('|',1);s=s.replace(chr(i),x);i-=1
print s

Python 781 731 605 579 Chars

s="e |nd|-We| a|-(Ooh|N| what|ive| go|ay it-|I|er|G|o |make5 |D| th| othH |A| tF|ing |nna |tell|'s been|'rS|-You|-N4| know|L5 up|PR | you|evHK>| how I'm feeling-|O, g7)|O)9gL, n4gL-(G7)|-I just wa>=53Gotta EuRHstaR-.|Q've8n eachBfor sFlong:r heart<Pch?but:;toFshy@sJInsidSwSboth8M<K?onQ8CSgame6we;go>plJ|9g79let5 down9runProuR6desHt59Ecry9sayKodbye9=P lie6hurt5-|\n|Q;nFstrangHs@love:8CSrules6sFdFI-A full commitment'sM I'mCink?of: wouldn't getCis fromPnyBguy0/AR if5Psk me3Don't = me5;[email protected]/0..";i=83
exec"x,s=s.split('|',1);s=s.replace(chr(i),x);i-=1"*39
print s

Python 781 731 605 582 Chars

Edit: After optimization it looks like other all python solutions. the only difference is the compressed string

s="er|e |nd|-We| a|O|N| what|ive| go|ay it-|I|-(Ooh|G|o |make5 |D| th| othT |A| tF|ing |nna |tell|'s been|'rS|-You|-N4| know|L5 up|PR | you|evTK>| how I'm feeling-|H, g7)|H)9gL, n4gL-(G7)|-I just wa>=53Gotta EuRTstaR-.|Q've8n eachBfor sFlong:r heart<Pch?but:;toFshy@sJInsidSwSboth8M<K?onQ8CSgame6we;go>plJ|9g79let5 down9runProuR6desTt59Ecry9sayKodbye9=P lie6hurt5-|\n|Q;nFstrangTs@love:8CSrules6sFdFI-A full commitment'sM I'mCink?of: wouldn't getCis fromPnyBguy0/AR if5Psk me3Don't = me5;[email protected]/0..";i=84
while i>44:x,s=s.split('|',1);s=s.replace(chr(i),x);i-=1
print s

Python 781 731 605 580 Chars

Edit  : thanks to Ed H's suggestions 2 chars chopped, to go further I might have to restructure a lot of thing here which is going to take some time

s="e |nd|-We| a|-(Ooh|N| what|ive| go|ay it-|I|er|G|o |make5 |D| th| othH |A| tF|ing |nna |tell|'s been|'rS|-You|-N4| know|L5 up|PR | you|evHK>| how I'm feeling-|O, g7)|O)9gL, n4gL-(G7)|-I just wa>=53Gotta EuRHstaR-.|Q've8n eachBfor sFlong:r heart<Pch?but:;toFshy@sJInsidSwSboth8M<K?onQ8CSgame6we;go>plJ|9g79let5 down9runProuR6desHt59Ecry9sayKodbye9=P lie6hurt5-|\n|Q;nFstrangHs@love:8CSrules6sFdFI-A full commitment'sM I'mCink?of: wouldn't getCis fromPnyBguy0/AR if5Psk me3Don't = me5;[email protected]/0..";i=83
while i>44:x,s=s.split('|',1);s=s.replace(chr(i),x);i-=1
print s

here's my code for it, also max_pattern is very slow  (so don't run on large texts)

here's my code for it, also max_pattern is very slow  (Note: code spits out a string similar to form in my previous version of the solution, I manually worked through it to get the current form, by manually I mean, manually in python shell)