Actor STR, who is busy with the composing works of Santhanam and Vaibhavi Shandilya starrer Sakka Podu Podu Raja took some time off to sing for his best friend Yuvan Shankar Raja. The composer has roped in the AYM actor for a number in actor Shirish Saravanan’s Raja Ranguski. Recently, SR roped in Yuvan for a song Kadhal Devadai in Sakka Podu Podu Raja. Raja Ranguski, directed by Dharanidharan has Chandini Tamilarasan as the heroine.