Gumnaam (Hindi for "unknown" or "anonymous") is a 1965 Indian horror thriller film directed by Raja Nawathe, starring Manoj Kumar, Nanda, Pran, Helen and Mehmood. The film became a box office hit. The music for the film was composed by Shankar-Jaikishan

The story is based on Agatha Christie's novel And Then There Were None.^{[citation needed]}

The film came to wider attention when its opening song "Jaan Pehechan Ho" (a Hindi phrase roughly translated as "We should get to know each other") was in the opening credits of Ghost World and in the 2011 commercial "The Date" for Heineken. It is sung by Bollywood legend Mohammed Rafi, although he is not the man depicted onscreen. The main dancer is Laxmi Chhaya. The group "Ted Lyons and his Cubs" playing the song can also be seen in 1964 film Jaanwar playing "Dekho Ab To" (a cover version of I Want to Hold Your Hand by Beatles) and Tasveer (starring Feroz Khan), Love Marriage (starring Dev Anand), Bedaag (starring Manoj Kumar), Shehnai and Mere Sanam (both starring Vishwajeet) also featuring dancer Oscar Unger. The psychedelic choreography was by Herman Benjamin.

Lata Mangeshkar (born September 28, 1929) is a singer from India. She is one of the best-known and most respected playback singers in India. Mangeshkar's career started in 1942 and has spanned over six and a half decades. She has recorded songs for over a thousand Hindi films and has sung songs in over thirty-six regional Indian languages and foreign languages, though primarily in Hindi. She is the elder sister of singer Asha Bhosle, Hridayanath Mangeshkar, Usha Mangeshkar and Meena Mangeshkar. She is the second vocalist to have ever been awarded the Bharat Ratna, India's highest civilian honour.

Mangeshkar was featured in the Guinness Book of World Records from 1974 to 1991 for having made the most recordings in the world. The claim was that she had recorded approximately 25,000 solo, duet, and chorus-backed songs in 20 Indian languages between 1948 to 1974. Over the years, while several sources have supported this claim, others have raised concerns over its veracity, claiming that this number was highly exaggerated and that Mangeshkar's younger sister, Asha Bhosle, had more song recordings than she had. In 2011 Guinness officially acknowledged Bhosle as the most recorded artist in music history.

Mohammad Rafi (December 24, 1924 – July 31, 1980) is considered to be the greatest Indian male playback singer of all time. He was awarded the National Film Award, Best Singer Award, six Filmfare Awards and the Best Singer of the Millennium award. In 1967, he was honoured with the Padma Shri award by the Government of India. His singing career spanned about 35 years, and he is noted for his ability to sing songs of different moods and varieties: his songs ranged from classical numbers to patriotic songs, sad lamentations to highly romantic numbers, qawwalis to ghazals and bhajans. He is best known for romantic and duet songs, which he playback sings with the technique to mould the voice according to characters of the actor on the screen.

Rafi is primarily noted for his songs in Hindi-Urdu, over which he had a strong command. He also sang in other Indian languages including Konkani, Bhojpuri, Oriya, Punjabi, Bengali, Marathi, Sindhi, Kannada, Gujarati, Telugu, Maghi, Maithili and Assamese. He also recorded a few songs in foreign languages such as English, Persian, Spanish and Dutch. From available figures, Rafi sang 4,516 Hindi film songs, 112 non-Hindi film songs, and 328 private (non-film) songs from 1945 to 1980.

Manoj Kumar (born Harikrishna Giri Goswami on 24 July 1937) is an award-winning Indian actor and director in the Bollywood film industry. He is known for acting in and directing films with patriotic themes, and has been given the nickname "Mr Bharat" (Bhaarat is the Hindi term for India). In 1992, he was honoured with the Padma Shri by the Government of India.

Manoj Kumar was born in Abbottabad, a town of Khyber-Pakhtunkhwa, then part of India. Abbottabad is now located within the borders of Pakistan. His original name was Harikishan Giri Goswami. When he was 10, his Gosain Hindu family had to move to Delhi owing to partition. His family lived as refugees in Vijay Nagar, Kingsway Camp and later moved to Patel Nagar area of New Delhi.

After graduating from Hindu College, University of Delhi, he decided to enter the film industry.

As a youth, he admired Bollywood superstar Dilip Kumar, and decided to name himself Manoj Kumar after Dilip's character in Shabnam (1949).

After making a little-noticed début in Fashion in 1957, Manoj landed his first leading role in Kaanch Ki Gudia (1960) opposite Sayeeda Khan. Piya Milan Ki Aas and Reshmi Roomal followed, setting the stage for the Vijay Bhatt-directed Hariyali Aur Raasta (1962) opposite Mala Sinha. Kumar then appeared with Sadhana in Raj Khosla's Woh Kaun Thi (1964), and reunited with Vijay Bhatt and Mala Sinha in Himalaya Ki God Mein (1965).

Alka Yagnik (born March 20, 1966 in Kolkata, West Bengal, India) is an Indian singer. Among the best-known playback singers of Hindi cinema, she is a record seven-time winner of the Filmfare Award for Best Female Playback Singer from a record of 35 nominations, a two-time recipient of the National Film Award as well as several other music awards listed below. Further, as many as 20 of her tracks feature in BBC's "Top 40 Bollywood Soundtracks of all time" review.

Alka Yagnik was born in Kolkata on March 20, 1966. Her mother Shubha Yagnik was a singer of Indian classical music. She received her school education from Modern High School for Girls. At the age of 6, she started singing for Akashvani (All India Radio), Calcutta. At age 10, her mother brought her to Bombay as a child singer. She was advised to wait until her voice matured, but her mother remained determined. On a subsequent visit, Alka got a letter of introduction to Raj Kapoor from his Kolkata distributor. Kapoor heard the girl and sent her with a letter to noted music director Laxmikant. Impressed, Laxmikant gave her two alternatives — an immediate start as a dubbing artist or a later break as a singer; they settled for the latter.