<P> The soundtrack album and film score is composed by Pritam with song lyrics by Amitabh Bhattacharya . The reprised versions of songs "Bulleya" & "Channa Mereya" and "Aaj Jaane Ki Zid Na Karo" were released separately in the deluxe edition of the album, but not added in soundtrack album . However, the latter of these, which is written by Fayyaz Hashmi and was originally composed by Sohail Rana, was recreated and featured in the film too . </P> <P> All lyrics written by Amitabh Bhattacharya; all music composed by Pritam . </P> <Table> <Tr> <Th_colspan="4"> Track listing </Th> </Tr> <Tr> <Th> No . </Th> <Th> Title </Th> <Th> Singer (s) </Th> <Th> Length </Th> </Tr> <Tr> <Td> 1 . </Td> <Td> "Ae Dil Hai Mushkil" </Td> <Td> Arijit Singh </Td> <Td> 4: 29 </Td> </Tr> <Tr> <Td> 2 . </Td> <Td> "Bulleya" </Td> <Td> Amit Mishra, Shilpa Rao </Td> <Td> 5: 49 </Td> </Tr> <Tr> <Td> 3 . </Td> <Td> "Channa Mereya" </Td> <Td> Arijit Singh </Td> <Td> 4: 49 </Td> </Tr> <Tr> <Td> 4 . </Td> <Td> "The Breakup Song" </Td> <Td> Arijit Singh, Jonita Gandhi, Badshah, Nakash Aziz </Td> <Td> 4: 12 </Td> </Tr> <Tr> <Td> 5 . </Td> <Td> "Cutipie" </Td> <Td> Pardeep Singh Sran, Nakash Aziz </Td> <Td> 3: 51 </Td> </Tr> <Tr> <Td> 6 . </Td> <Td> "Alizeh" </Td> <Td> Arijit Singh, Ash King, Shashwat Singh </Td> <Td> 4: 42 </Td> </Tr> <Tr> <Td_colspan="3"> Total length: </Td> <Td> 27: 54 </Td> </Tr> </Table> <Tr> <Th_colspan="4"> Track listing </Th> </Tr>

Who is the singer of ae dil hai mushkil