Complex sentence: The underlying tune is "O Haseena Zulfon Wale" from the 1966 movie Teesri Manzil, the set copies that of the song in the movie, and is also the first line of this stanza.
Split into simpler sentences: The underlying tune is "O Haseena Zulfon Wale" from the 1966 movie "Teesri Manzil". The set copies that of the song in the movie, and is also the first line of this stanza.