The Academy Award for Best Original Song is one of the awards given annually to people working in the motion picture industry by the Academy of Motion Picture Arts and Sciences (AMPAS). It is presented to the songwriters who have composed the best original song written specifically for a film. The performers of a song are not credited with the Academy Award unless they contributed either to music, lyrics or both in their own right.

The award category was introduced at the 7th Academy Awards, the ceremony honoring the best in film for 1934. Nominations are made by Academy members who are songwriters and composers, and the winners are chosen by the Academy membership as a whole.

The original requirement was only that the nominated song appear in a motion picture during the previous year. This rule was changed after the 1941 Academy Awards, when "The Last Time I Saw Paris", from the film Lady Be Good, with music by Jerome Kern and lyrics by Oscar Hammerstein II, won. Kern was upset that his song won because it had been published and recorded before it was used in the film. The song was actually written in 1940, after the Germans occupied Paris at the start of World War II. It was recorded by Kate Smith and peaked at number 8 on the best seller list before it was used in the film Lady Be Good. Kern got the Academy to change the rule so that only songs that are "original and written specifically for the film" are eligible to win.

The Best may refer to:

In music, a song is a composition for voice or voices, performed by singing. A song may be accompanied by musical instruments, or it may be unaccompanied, as in the case of a cappella songs. The lyrics (words) of songs are typically of a poetic, rhyming nature, though they may be religious verses or free prose.

A song may be for a solo singer, a duet, trio, or larger ensemble involving more voices. Songs with more than one voice to a part are considered choral works. Songs can be broadly divided into many different forms, depending on the criteria used. One division is between "art songs", "pop songs", and "folk songs". Other common methods of classification are by purpose (sacred vs secular), by style (dance, ballad, Lied, etc.), or by time of origin (Renaissance, Contemporary, etc.).

A song is a piece of music for accompanied or unaccompanied voice or voices or, "the act or art of singing," but the term is generally not used for large vocal forms including opera and oratorio. However, the term is, "often found in various figurative and transferred sense (e.g. for the lyrical second subject of a sonata...)." The noun "song" has the same etymological root as the verb "to sing" and the Oxford English Dictionary (OED) defines the word to mean "that which is sung" or "a musical composition suggestive of song." The OED also defines the word to mean "a poem" or "the musical phrases uttered by some birds, whales, and insects, typically forming a recognizable and repeated sequence and used chiefly for territorial defence or for attracting mates."

Mohit Chauhan (born March 11, 1974) is an Indian pop and playback singer, most known for his romantic ballads. He started his career singing Indian pop songs with the band Silk Route, which released two albums, Boondein (1998) and Pehchan. The song "Dooba Dooba" became a rave in the Indipop music scene. However, the band dissolved. He would stay off the scene for a while until he came back with the song "Guncha" in 2005 from the "Main, Meri Patni Aur Woh" for which, he would also compose. Impressed by his vocals, he was then approached by A. R. Rahman to sing for the movie Rang De Basanti. The song "Khoon Chala" earned him rave reviews. However, it wouldn't be until 2007 when music director Pritam approached him for the song Tum Se Hi for the movie Jab We Met that Chauhan would finally achieve mainstream success.

Mohit Chauhan was born in the town of Nahan in Sirmaur district, Himachal Pradesh, to Krishana Rana and B. K. Rana. He can speak fluently in Pahari and Hindi. He first attended St. Xavier's School, Delhi and then again moved to Himachal Pradesh to complete his education. Chauhan went to college in Nahan Sirmour, Bilaspur, Mandi, Kullu, and graduated with a Master of Science in Geology from the Dharamshala College in Himachal.