Director
Bala finalised his next project following
Paradesi (2013) only in October 2013 and revealed that he would make a film starring his former protege
Sasikumar in the lead role, while
G. V. Prakash Kumar and
Kishore would be the film's composer and editor respectively. In January 2014, Bala decided to call
Ilaiyaraaja in to the project to replace G. V. Prakash. A number of actresses, including Shravanthi Sainath, auditioned for the lead actress before
Varalaxmi Sarathkumar was finalised, and Bala asked her to lose ten kilograms for the film. Sasikumar was asked to shave his trademark beard and sport a thin moustache, in order to reportedly play a
Nadaswaram player. Furthermore, to look the part, he had to train for a month with folk singers and dancers brought in by Bala. Sasikumar also sported long hair for the film. Producer
R. K. Suresh of Studio 9 Media Works, was signed on to play the antagonist in the film and undertook training in fight scenes with action choreographer Pandian. The team also selected Hindi film maker
Satish Kaushik to portray a character in the film, and he joined the team in the third schedule, while director Haricharan of
Thoovanam (2007) was also signed to portray his first acting role. In January 2015, reports revealed that Kannada actress Kaavya Sha had been given a pivotal role in the film, which will mark her Tamil debut, after singer
Pragathi Guruprasad had opted out of the role. Sahana Sheddy, who is well known for her role as Kavya on the Tamil serial,
Azhagu (TV series) plays the role of one of the troupe dancers in this film. The title of the film was announced in March 2014 to be
Tharai Thappattai, after titles including
Karagattam and
Paarai had been considered. Also by March 2014, it was revealed that
Ilaiyaraaja had finished recording 12 songs for this film using a live orchestra, in a span of six days. Furthermore, since folk dance is an integral part of the film, he had used folk musicians who are not associated with the film industry. The film's shoot took over 100 days to finish, while the makers had a three-month break in 2015, owing to Sasikumar's hand injury, which he suffered while filming the climax. ==Soundtrack==