Different ppl do it from different scale.I just gave you from Em

Krisno
Prelude:- Em- D/ Em-D/ Em-D/ Em-A/B
C (x32010@1)       Bm7Krishno (x20202@1)Aila Radhar Kunje 
Am (x02210@1)    BmPhule (x24432@1)Paila Bhromora 
Am (x02210@1)    Bm (x24432@1)         C (x32010@1)   CM7Moyur (x3131x@1)Beshete Shajon Raadhika || 
Interlude:- Em- D/ Em-D/ Em-D/ Em-Am/Bm
Ontora :-
Em (022000@1)                            Bm (x24432@1)    `       C (x32010@1)             CsusShoya (x33010@1)Chondon Fuler Mala, Shokhigone Loiyya Aila 
Am (x02210@1)            Bm (x24432@1)                    C (x32010@1)   CM7th crosS C/Bm/Am/Bm
Krishno Dila Radhar Kole, Bashor Hoilo Ujala 
Am (x02210@1)            Bm (x24432@1)            C (x32010@1)   CM
Bashor Hoilo Ujala Go Bashor Hoilo Ujala 
Am (x02210@1)                     Bm (x24432@1)    C (x32010@1)   CM7Moyur (x3131x@1)Beshete Shajon Raadhika ||