Pranav Chaganti, a young engineer, came up with an interesting rap song, on Kalathapasvi K. Viswanath, Telugu film director, who is the proud recipient of Dadasaheb Phalke Award. At a ceremony to felicitate him, this evening, in Hyderabad, Pranav Chaganti composed a song, and sang it to the beat of rap music. The most charming part of the song is that there was no orchestra, except for a ghatam. The young lad forget a few lines in between, but made it up with his devotion to the ace director. Hemachandra and Sunitha anchored the show.