Expectation of Ticket Purchase
It’s reasonable to think that Mathew might expect Raghu to buy tickets for the classical music concert based on a few key factors.

Previous Experiences
- If Mathew and Raghu have attended events together before, there may be a pattern where one person typically buys tickets.
- This history can create an expectation, making Mathew think it’s Raghu's turn.

Friendship Dynamics
- In many friendships, there’s often an unspoken agreement about who pays for what.
- If Raghu has bought tickets in the past, Mathew may feel it’s a norm for him to do so again.

Communication
- If Mathew has shown enthusiasm about the concert, he might assume Raghu is also interested in attending together.
- If they have discussed going to the concert, Mathew might take it for granted that Raghu will handle the tickets.

Financial Considerations
- If Raghu usually has more financial flexibility, Mathew may expect him to take the initiative in purchasing tickets.
- Conversely, if Mathew is aware of Raghu's financial situation, he may feel it’s more reasonable for him to contribute.

Conclusion
In summary, whether Mathew expects Raghu to buy the tickets can depend on their friendship history, previous agreements, communication, and financial circumstances. Understanding these dynamics can help clarify expectations and ensure both friends enjoy the concert together!