Explanation:

- Option 1: Nagpur

- Nagpur is known for its cultural and historical significance. However, it is not recognized by UNESCO for music in 2017.

- Option 2: Vadodara

- Vadodara, often recognized for its rich cultural heritage, is not noted specifically for music by UNESCO in 2017.

- Option 3: Bengaluru

- Bengaluru is famous for its vibrant music scene but wasn't the city chosen by UNESCO for its music in that year.

- Option 4: Chennai

- Chennai is celebrated for its rich musical heritage, specifically Carnatic music. It was included in the UNESCO Creative Cities Network for music in November 2017.