Balu Mahendra and Ilaiyaraaja.

26 films with both credited.

Year	Film	Balu Mahendra	Ilaiyaraaja	Language
1978	Mullum Malarum	Cinematographer	Music Director	Tamil
1980	Moodu Pani	Cinematographer, Director	Music Director	Tamil
1981	Seethakoka Chiluka	Cinematographer	Music Director	Telugu
1982	Echchil Iravugal	Cinematographer	Music Director	Tamil
1982	Moondram Pirai	Cinematographer, Director, Writer	Music Director	Tamil
1982	Nireekshana	Director	Music Director	Telugu
1982	Olangal	Cinematographer, Director, Writer	Music Director	Malayalam
1983	Oomakkuyil	Cinematographer, Director	Music Director	Malayalam
1983	Pallavi Anu Pallavi	Cinematographer	Music Director	Kannada
1983	Sadma	Cinematographer, Director	Music Director	Hindi
1983	Urangatha Ninaivugal	Cinematographer	Music Director	Tamil
1984	Neengal Kettavai	Director, Writer	Music Director	Tamil
1985	Un Kannil Neer Vazhindal	Cinematographer, Director, Writer	Music Director	Tamil
1985	Yathra	Cinematographer, Director	Music Director	Malayalam
1987	Rettai Vaal Kuruvi	Cinematographer, Director, Editor, Writer	Music Director	Tamil
1988	Veedu	Cinematographer, Director, Editor, Writer	Music Director	Tamil
1992	Chakravyuham	Director	Music Director	Telugu
1992	Vanna Vanna Pookkal	Cinematographer, Director, Editor, Writer	Music Director	Tamil
1993	Marupadiyum	Cinematographer, Director, Writer	Music Director	Tamil
1995	Sathi Leelavathi	Director	Music Director	Tamil
1996	Aur Ek Prem Kahani	Cinematographer, Director, Writer	Music Director	Hindi
1997	Raman Abdullah	Director, Writer	Music Director	Tamil
2001	En Iniya Ponnilave	Cinematographer, Director, Writer	Music Director	Tamil
2003	Julie Ganapathi	Cinematographer, Director, Writer	Music Director	Tamil
2005	Adhu Oru Kana Kaalam	Cinematographer, Director, Writer	Music Director	Tamil
2013	Thalaimuraigal	Actor, Cinematographer, Director, Editor, Writer	Music Director	Tamil