As a National Music Coordinator for Sea Shepherd Australia, your responsibilities would include:

1. Researching and Planning: You would be responsible for researching and identifying national music tours and events that align with the mission of Sea Shepherd and support the promotion of the organization's goals. This would involve identifying opportunities within the music and festival industry that resonate with the Sea Shepherd ethos.

2. Application and Coordination: Once suitable events are identified, you would be responsible for applying for Sea Shepherd's participation in those events on behalf of the local Australian chapters. This would involve coordinating with event organizers, submitting applications, and securing Sea Shepherd's involvement in the events.

3. Relationship Management: Building and maintaining strong relationships with artists, promoters, and management teams within the music and festival industry would be crucial. This would involve collaborating with the Outreach, Media, and Fundraising departments of Sea Shepherd to support and execute national projects and activities.

4. Multi-Chapter Events: In cases where events are held across multiple locations in Australia, requiring the participation of multiple Sea Shepherd chapters, you would be responsible for confirming the chapters' attendance and providing them with all relevant event information.

5. Music Sponsorships and Ambassadors: You would handle inquiries regarding music sponsorships and potential ambassadors for Sea Shepherd. This would involve assessing sponsorship opportunities and managing relationships with musicians or music industry professionals who wish to support and promote Sea Shepherd.

6. Increasing Awareness and Funds: Your role would involve working towards increasing awareness and funds raised at music events represented by Sea Shepherd Australia. This could include implementing strategies to engage audiences, promote the organization's mission, and maximize fundraising efforts during music events.

7. Gathering Promotional Content: You would be responsible for gathering promotional content from music events that can be used to support media initiatives. This could include photos, videos, interviews, or any other relevant material that showcases Sea Shepherd's involvement and impact at these events.

Overall, your role as a National Music Coordinator would focus on leveraging the music and festival industry to promote Sea Shepherd's mission, raise awareness about ocean conservation, and support fundraising efforts across Australia.