 He collaborated with S. Janaki for many films, including Edakallu Guddada Mele ("Sanyasi Sanyasi") directed by Puttanna Kanagal.Ranga Rao composed memorable duets sung by Dr. Rajkumar and S. Janaki for "Vasanta Geeta", "Hosabelaku" and "Samayada Gombe".For Hosabelaku, Ranga Rao composed a melodious tune for a poem by Rashtrakavi Kuvempu "Teredide Mane O Baa Atithi" and S. Janaki sung this along with another legendary singer Vani Jayaram.