The song begins with F, and contains plenty black keys. So, I prefer to play with a transpose -2
Dil se re
G B C C B G F F G F G F G
[C]....
Ek sooraj nikla tha
G B G G F G
[G]..........[Dm]...
Kuchh paara pighla tha
Ek aandhi aayi thi
Jab dil se aah nikli thi
G B G B G B B C B G
[G]........................[C].....
Dil se re
G B C
[C]...
Dil se re dil se re
G B C B G B G F
[C]..............[G]..........[Dm]..
Dil se re dil se re
Dil se re
G B C
[C]...
Dil to aakhir dil hai na
C D D D D C C
[C]...
meethi si mushkil hai na
C C C C C B B
[C]...........[G]....
Piya piya
B D B C C B G
[G].......[C]...
Piya piya piya na piya
C D C C B B C B C C B G
[C]..............[G]..............
Jiya jiya jiya na jiya
Dil se re
G B C
Do patte patjhad ke pedon se utrey thay
G B G G F G G B G G F E
[G]...........[Dm]...........[G]............[Dm]...
Pedon ki shaakhon se utrey thay
G B G G F G G B C B G
[G]..........[Dm].............[C].....
Phir utne mausam guzre vo patte do bechaare
G B G G G F G G B G G F G G
[G].......................[Dm]...[G].........[Dm]...
Phir ugne ki chaahat mein vo sehraon se guzre
Vo patte dil dil dil thay
G B G B G B B C B G
[G].....................[C]............
Vo dil thay dil dil dil thay
Dil hai to phir dard hoga
G G F F F E E F E
[Em]....
dard hai to dil bhi hoga
F F E E E D D E D
[Dm]...
Mausam guzarte rehte hain
E E D D D C C D C B C
[C]...
Dil hai to phir dard hoga
dard hai to dil bhi hoga
Mausam guzarte rehte hain
Dil se dil se dil se dil se
D C C B B G G F
dil se re
Dil se re
G B C C B G F F G F G F G
[C]....
Ek sooraj nikla tha
G B G G F G
[G]..........[Dm]...
Kuchh paara pighla tha
Ek aandhi aayi thi
Jab dil se aah nikli thi
G B G B G B B C B G
[G]........................[C].....
Dil se re
G B C
[C]...
Dil se re dil se re
G B C B G B G F
[C]..............[G]..........[Dm]..
Dil se re dil se re
Dil se re
G B C
[C]...
Dil to aakhir dil hai na
C D D D D C C
[C]...
meethi si mushkil hai na
C C C C C B B
[C]...........[G]....
Piya piya
B D B C C B G
[G].......[C]...
Piya piya piya na piya
C D C C B B C B C C B G
[C]..............[G]..............
Jiya jiya jiya na jiya
Dil se re
G B C
Do patte patjhad ke pedon se utrey thay
G B G G F G G B G G F E
[G]...........[Dm]...........[G]............[Dm]...
Pedon ki shaakhon se utrey thay
G B G G F G G B C B G
[G]..........[Dm].............[C].....
Phir utne mausam guzre vo patte do bechaare
G B G G G F G G B G G F G G
[G].......................[Dm]...[G].........[Dm]...
Phir ugne ki chaahat mein vo sehraon se guzre
Vo patte dil dil dil thay
G B G B G B B C B G
[G].....................[C]............
Vo dil thay dil dil dil thay
Dil hai to phir dard hoga
G G F F F E E F E
[Em]....
dard hai to dil bhi hoga
F F E E E D D E D
[Dm]...
Mausam guzarte rehte hain
E E D D D C C D C B C
[C]...
Dil hai to phir dard hoga
dard hai to dil bhi hoga
Mausam guzarte rehte hain
Dil se dil se dil se dil se
D C C B B G G F
dil se re