The film script or lines of dialogue (called "dialogues" in Indian English) and the song lyrics are often written by different people.

Dialogues are usually written in an unadorned Hindi or Hindustani that would be understood by the largest possible audience. Some movies, however, have used regional dialects to evoke a village setting, or old-fashioned courtly उर्दू भाषा in Mughal era historical films. Contemporary mainstream movies also make great use of English. Some movie scripts are first written in Roman alphabet. Characters may shift from one language to the other to express a certain atmosphere (for example, English in a business setting and Hindi in an informal one).

Cinematic language, whether in dialogues or lyrics, is often melodramatic and invokes God, family, mother, duty, and self-sacrifice liberally.

Music directors often prefer working with certain lyricists, to the point that the lyricist and composer are seen as a team. This phenomenon is not unlike the pairings of American composers and songwriters that created old-time Broadway musicals ("e.g.," Richard Rodgers and Oscar Hammerstein II, or Alan Jay Lerner and Frederick Loewe). Song lyrics are usually about love. Bollywood song lyrics, especially in the old movies, frequently use Arabo-Persic Urdu vocabulary. Another source for love lyrics is the long Hindu tradition of poetry about the mythological amours of Krishna, Radha, and the gopis. Many lyrics compare the singer to a devotee and the object of his or her passion to Krishna or Radha.

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Cast and crew
Plagiarism
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