The much awaited 'Solli Tholaiyen Ma' track fro Yaakkai is out. Starring Krishna and Swathi, Yaakkai is directed by Kulandai Velappan of Aanmai Thavarael. Yuvanshankar Raja has composed the music while Dhanush has crooned this interesting number with lyrics by Vignesh Shivan. This realistic romantic thriller, which has two parallel stories, is currently in their post-production stage.