Sajid-Wajid first scored music for Sohail Khan's Pyar Kiya To Darna Kiya in 1998. In 1999, they scored music for Sonu Nigam's album Deewaana. The songs, Deewaana Tera, Ab Mujhe Raat Din and Iss Kadar Pyaar Hai went on to become hits. The same year, they worked as music directors for the film, Hello Brother and gave several hit numbers such as, "Hata Saawan Ki Ghata", "Chaandi ke Daal Par Sone Ka Mor", "Chupake Koi Jab Aayega" and "Hello Brother". In 2000, they scored the music for Baaghi. In later years, they composed music for several films such as, Kya Yehi Pyaar Hai (2002), Gunaah (2002),Chori Chori (2003 film) (2003), The Killer (2006), Shaadi Karke Phas Gaya Yaar (2006),Jaane Hoga Kya (2006)and Kal Kissne Dekha. The music duo have also composed music for several films starring Salman Khan, which include, Tumko Na Bhool Paayenge (2002), Tere Naam (2003), Garv (2004), Mujhse Shaadi Karogi (2004), Partner (2007), Hello (2008), God Tussi Great Ho (2008), Wanted (2009), Main Aur Mrs Khanna, (2009), Veer (2010) and Dabangg (2010).In 2010, they composed the soundtrack of No Problem.