Explanation:

- Option 1: Kashinath Ghanekar

Kashinath Ghanekar was a renowned Marathi stage actor and dental surgeon. He wasn't famous as a playback singer.

- Option 2: Kishore Kumar

Kishore Kumar was indeed a legendary playback singer and also a celebrated actor in Indian cinema. His contribution to music and films was immense.

- Option 3: Pranab Mukherjee

Pranab Mukherjee was a distinguished Indian politician who served as the 13th President of India. He wasn't associated with singing or acting.

- Option 4: Sunil Chhetri

Sunil Chhetri is a professional Indian footballer, known for being one of the top goal-scorers in international football. He is neither a singer nor an actor.