Since I'm unable to listen to audio or access external links, I can't provide specific answers to your questions about the audio track. However, I can help you deduce potential answers based on common themes regarding music.

1. **What is the author's attitude towards music?**
- Likely answer: **b) Enthusiastic** (if the audio conveys a positive feeling about music).

2. **What does the author wonder about regarding music?**
- Likely answer: **a) How it started** (this is a common curiosity about music).

3. **When does the author believe our interest in music may start?**
- Likely answer: **b) Before birth** (many believe that exposure to music can begin in the womb).

4. **What does music do for the author?**
- Likely answer: **c) Changes their mood and makes them feel good** (if the author shares positive experiences with music).

5. **What does the author like to do while on a train or bus?**
- Likely answer: **c) Put on headphones and listen to music** (a popular activity for commuters).

6. **What types of music does the author enjoy?**
- Likely answer: **c) All kinds, including classical, jazz, rock, and world music** (if the author appreciates diversity in music).

You can listen to the audio carefully and choose the answers that align best with the content presented there.