Ali Hossein Bayat Zarandi, known as Babak Bayat, was born on June 13, 1946 in Tehran. His father wanted him to become an athlete and go to an officer's college and start a military life, but he chose music. Bayat entered the Higher Conservatory of Music. He was 19 years old when he started working at the Tehran Opera and became acquainted with classical and world music under the supervision of Evelyn Baghtcheban, Samin Baghtcheban, and Nosratullah Zaboli. He began his artistic career as an official singer in the Baghtcheban Choir. He later developed a deep friendship with Mohammad Oshal, composer and conductor of the Folk Jazz Orchestra, who was involved in his artwork.
Iraj Jannati Ataei, a poet, songwriter and playwright who continued to play music with Babak Bayat from his childhood until before the revolution, was very influential in the life of Bayat and his family, which led to the creation of many songs, including: Gharibeh, The forest, the dead end, the house, the cry under water, Ali Konkuri, Tapesh, Khatoon, Sayeh, Khorjin (Eastern Lady), The Bad Gray Season (Noble Spirit), The Roof, There was no one like you, The Scout (O great one) and many other songs Led. Babak Bayat started the music of the film with the film Gharibeh, which was made with Varoujan. After The Stranger, Bayat composed the music for the films Sun in the Swamp, Sunny Night (with the song Doll of My Story), Underwater Scream, The Ring TV Series, and many other soundtracks. After the Iranian Revolution, Babak Bayat continued his musical activity with his friend Ebrahim Zalzadeh and with the "dandelion cassette", Samad Behrangi's biography. After that, the "Golden Rooster Fairy Shirt" Cassette with Ahmad Shamlou, and for the "Silence is full of the unspoken" cassettes and "Picking up the dawn", he composed music with the voice of Ahmad Shamlou.
Babak Bayat continued the soundtrack of the film after the revolution with the film Death of Yazdgerd by Bahram Beizai. In 1983, he made music for the films Weaknesses and Roots in the Blood, and in the following years for the films Maybe another time by Bahram Beizai, the series Sultan and the Shepherd, Angelica Wrestling, The Last Curtain, Talisman, Mercedes, Jahan Pahlavan Takhti, Red, Two Women, and wrote about 90 film musics.
Babak Bayat trained many singers, including Mohammad Esfahani, Hami, Mani Rahnama, Nima Masiha. He has composed many songs with the words of songwriters such as Iraj Jannati Ataei, Babak Sahraei and with the voices of singers such as Dariush, Moein, Ebi, Aref, Sattar and Googoosh. He also taught film music at Tehran universities for eight years.