Udit Narayan Jha is an Indian playback singer whose songs have been featured mainly in Hindi films. He has also sung in various other languages including Telugu, Kannada, Tamil, Bengali, Sindhi, Odia, Bhojpuri, Nepali, Malayalam, Assamese, Bagheli and Maithili. He has won four National Film Awards and five Filmfare Awards with twenty nominations among many others. The Government of India honoured him with the Padma Shri in 2009 and the Padma Bhushan in 2016 for his contribution towards arts and culture. As many as 21 of his tracks feature in BBC's "Top 40 Bollywood Soundtracks of all time".

Mohammed Rafi was an Indian playback singer and musician. He is considered to have been one of the greatest and most influential singers of the Indian subcontinent. Rafi was notable for his versatility and range of voice; his songs varied from fast peppy numbers to patriotic songs, sad numbers to highly romantic songs, qawwalis to ghazals and bhajans to classical songs. He was known for his ability to mould his voice to the persona and style of the actor lip-syncing the song on screen in the movie. He received six Filmfare Awards and one National Film Award. In 1967, he was honored with the Padma Shri award by the Government of India. In 2001, Rafi was honoured with the "Best Singer of the Millennium" title by Hero Honda and Stardust magazine. In 2013, Rafi was voted for the Greatest Voice in Hindi Cinema in the CNN-IBN's poll.