The dancing in Bollywood films, especially older ones, is primarily modelled on Indian dance: classical dance styles, dances of historic northern Indian courtesans (tawaif), or folk dances. In modern films, Indian dance elements often blend with Western dance styles (as seen on MTV or in Broadway musicals), though it is not unusual to see Western pop and pure classical dance numbers side by side in the same film. The hero or heroine will often perform with a troupe of supporting dancers. Many song-and-dance routines in Indian films feature unrealistically instantaneous shifts of location and/or changes of costume between verses of a song. If the hero and heroine dance and sing a pas-de-deux (a dance and ballet term, meaning "dance of two"), it is often staged in beautiful natural surroundings or architecturally grand settings. This staging is referred to as a "picturisation".

Songs typically comment on the action taking place in the movie, in several ways. Sometimes, a song is worked into the plot, so that a character has a reason to sing; other times, a song is an externalisation of a character's thoughts, or presages an event that has not occurred yet in the plot of the movie. In this case, the event is almost always two characters falling in love.

Bollywood films have always used what are now called "item numbers". A physically attractive female character (the "item girl"), often completely unrelated to the main cast and plot of the film, performs a catchy song and dance number in the film. In older films, the "item number" may be performed by a courtesan (tawaif) dancing for a rich client or as part of a cabaret show. The dancer Helen was famous for her cabaret numbers. In modern films, item numbers may be inserted as discotheque sequences, dancing at celebrations, or as stage shows.

For the last few decades Bollywood producers have been releasing the film's soundtrack, as tapes or CDs, before the main movie release, hoping that the music will pull audiences into the cinema later. Often the soundtrack is more popular than the movie. In the last few years some producers have also been releasing music videos, usually featuring a song from the film. However, some promotional videos feature a song which is not included in the movie.