Mohammed Aziz, also known as saikh azad Bihar, was an Indian multilingual playback singer who primarily sang for the Bollywood, Odia films, Bengali. He sang about twenty thousand songs, including Bhajans, Sufi devotional songs and other genres in more than ten different Indian languages. He made his first appearance in films Odia film titled Jaga Hatare Pagha directed by Mohammad Mohsin, with the song Rupa Sagadi re Suna Kaniya. Later he the sung most numbers of songs in Odia and for Ollywood Actor Siddhanta Mahapatra. Later he appeared with a Hindi film titled Ambar and his two prominent songs, including "Mard Tangewala" composed by Anu Malik were introduced in Mard.
He had sung numerous duets in 1980s and 1990s with singers like Lata Mangeshkar, Asha Bhosle, K.S.Chithra, Sulakshana Pandit, Vijayta Pandit, Usha Mangeshkar, Anuradha Paudwal, Kavita Krishnamurthy, Sadhana Sargam, S. Janaki, Alka Yagnik, Salma Agha, Hemlata, Sapna Mukherjee, Chandrani Mukherjee, Poornima, Sarika Kapoor, Uttara Kelkar and Alisha Chinai.