Rathna is a 1998 Tamil language film directed by Ilanchezhiyan.
 The film features Murali in a dual lead role, while Sangita, Revathi and Maheswari play other supporting roles.
 The film, which has music by Jayasurya, released in May 1998.
Poonthottam (English: Garden of flowers) is a 1998 Tamil language film directed by Kalanjiyam.
 The film features Murali and Devayani in the lead roles, while Raghuvaran, Manivannan and Vijayalakshmi play other supporting roles.
 The film, which has music by Ilaiyaraaja, released in July 1998.
Thulli Thirintha Kaalam is a 1998 Tamil language film directed by Balasekaran and produced by K. Balachandar.
 The film featured Arunkumar alongside Roshini, while Kushboo and Karan play supporting roles.
 The film, which had music composed by Jayanth, opened in March 1998.
Dhinamdhorum (English: Everyday ) is a 1998 Tamil language film directed by Nagaraj.
 The film features Murali and Suvalakshmi in the lead roles, while Manivannan and Renuka play other supporting roles.
 The film, which has music by Oviyan, released in February 1998.
Unnudan (English: 'With you') is a 1998 Tamil language film directed by R. Balu and produced by Aroma Mani.
 The film featured Murali alongside Kausalya, while Vivek and Manivannan play supporting roles.
 The project saw the director and cast come together after the success of their previous film "Kaalamellam Kadhal Vaazhga" (1997).
 The film, which had music composed by Deva, opened in October 1998.
Evangelos Odysseas Papathanassiou ( ] ; born 29 March 1943), known professionally as Vangelis ( ] ; English pronunciation: ), is a Greek composer of electronic, progressive, ambient, jazz, and orchestral music.
 He is best known for his Academy Award-winning score for the film "Chariots of Fire", composing scores for the films "Blade Runner", "Missing", "Antarctica", "", and "Alexander", and the use of his music in the PBS documentary "" by Carl Sagan.
Corciolli (born 8 January 1968) is a Brazilian composer and producer of electronic, ambient, contemporary progressive, world and orchestral music.
 He plays piano, keyboards and synthesizers and he is best known for many successful albums of meditation and ambient music.
 Some of his work has been featured on international compilation albums, with artists like Vangelis, Hans Zimmer, Sarah Brightman, Luciano Pavarotti and Diana Krall, among others.
Natpukaaga (Tamil: நட்புக்காக English: "For Friendship") is a 1998 Tamil language film directed by K. S. Ravikumar.
 It starred Sarath Kumar and Simran in the lead roles.
 It became a blockbuster upon release.
Kadhal Kavithai (English: "Poem of Love" ) is a 1998 Tamil language romance film directed by Agathiyan and produced by Murali Manohar.
 The film features Prashanth and Isha Koppikar in the lead roles, while Kasthuri, Manivannan and Srividya play other supporting characters.
 The film had music composed by Ilaiyaraaja, while duo Lancy-Mohan and Ravi Yadav handled the editing and cinematography respectively.
 After opening in December 1998, the film went on to gain success critically and became a commercially successful venture.
Veera Thalattu is a 1998 Tamil language film directed by Kasthuri Raja.
 The film features Murali, Vineetha and Kushboo in the lead roles, while Rajkiran, Raadhika and Lakshmi play other supporting roles.
 The film, which has music by Ilaiyaraaja, released in April 1998.

Question: Thulli Thirintha Kaalam, is a 1998 Tamil language film, directed by Balasekaran, the film had music composed by Evangelos Odysseas Papathanassiou, known professionally as Vangelis, of which nationality, a composer of electronic, progressive, ambient, jazz, and orchestral music?
Answer: Greek