<P> The acclaimed soundtrack of the film Lagaan (also called Lagaan: Once Upon a Time in India) was composed by A.R. Rahman, with lyrics by Javed Akhtar . There are six songs and two instrumental pieces in this film . Rahman incorporated several music styles and genres to create the soundtrack . </P> <P> Upon release, the soundtrack became highly popular, with all songs becoming huge hits . It also received high critical acclaim, with many reviewers stating it as a "Magnum Opus" by A.R. Rahman . It is described as one of Rahman's finest and most successful works to date . The rich background score of the film also got great critical acclaim and is said to have contributed immensely to the film's success . </P> <Table> <Tr> <Th> No . </Th> <Th> Title </Th> <Th> Singer (s) </Th> <Th> Length </Th> </Tr> <Tr> <Td> 1 . </Td> <Td> "Ghanan Ghanan" </Td> <Td> Udit Narayan, Sukhwinder Singh, Alka Yagnik, Shankar Mahadevan, Shaan, Chorus </Td> <Td> 6: 11 </Td> </Tr> <Tr> <Td> 2 . </Td> <Td> "Mitwa" </Td> <Td> Udit Narayan, Sukhwinder Singh, Alka Yagnik, Srinivas </Td> <Td> 6: 47 </Td> </Tr> <Tr> <Td> 3 . </Td> <Td> "Radha Kaise Na Jale" </Td> <Td> Asha Bhosle, Udit Narayan, Vaishali Samant, Chorus </Td> <Td> 5: 34 </Td> </Tr> <Tr> <Td> 4 . </Td> <Td> "O Rey Chhori" </Td> <Td> Udit Narayan, Alka Yagnik, Vasundhara Das </Td> <Td> 5: 59 </Td> </Tr> <Tr> <Td> 5 . </Td> <Td> "Chale Chalo" </Td> <Td> A.R. Rahman, Srinivas, Chorus </Td> <Td> 6: 40 </Td> </Tr> <Tr> <Td> 6 . </Td> <Td> "Waltz for a Romance (in' A' Major)" (Instrumental) </Td> <Td> </Td> <Td> 2: 29 </Td> </Tr> <Tr> <Td> 7 . </Td> <Td> "O Paalanhaare" </Td> <Td> Lata Mangeshkar, Sadhana Sargam, Udit Narayan & Choruses </Td> <Td> 5: 19 </Td> </Tr> <Tr> <Td> 8 . </Td> <Td> "Lagaan...Once Upon a Time in India" </Td> <Td> Anuradha Sriram, Chorus Strings arranged by R. Prasanna </Td> <Td> 4: 12 </Td> </Tr> <Tr> <Td_colspan="3"> Total length: </Td> <Td> 41: 58 </Td> </Tr> </Table> <Tr> <Th> No . </Th> <Th> Title </Th> <Th> Singer (s) </Th> <Th> Length </Th> </Tr>

How many song tracks are there in the movie lagaan