Based on the information present in the given passage, you need to write a correct answer to the given question. A correct answer is one that correctly and completely answers the question. Do not write answers that address the question partially or incorrectly. The correct answer must be contained in the given paragraph.
Q: Paragraph- Sent 1: I had drunk too much, I confess, though we all had.
Sent 2: Somehow, Tasha and I began to argue the worth of Solevgrad jazz, as inconsequential a topic as I can imagine.
Sent 3: She had studied it in school, so she thought herself as an expert.
Sent 4: I once had a neighbor who played it constantly, loudly, and badly, so I thought I knew it better.
Sent 5: Malaquez tried to mediate, but I saw him as siding with Tasha.
Sent 6: So, I think, did she.
Sent 7: The subject shifted from music to Tasha's obsession with fame, undoubtedly by a leap that I made.
Sent 8: She had no choice but to follow.
Sent 9: (I do not remember any of this well, just now, nor do I care to.
Sent 10: Those who are truly curious may look at the last act of "Captured Moments.") I remember suggesting, with characteristic tact, that she add Emil to her small list of major accomplishments.
Sent 11: Malaquez glanced away, embarrassed.
Sent 12: Tasha looked at me as if to say, "I will."Sent 13: She said, "I feel sorry for you, Nardo.
Sent 14: I'll see Emil home."Sent 15: "Yes," I said, "Do that," and did not care what she did, or why.
Sent 16: Emil asked, "You're all right?"Sent 17: I muttered something he must have interpreted as assent.
Sent 18: They both walked up to Emil's home while I watched the scarlet moonlight ripple on distant waves.
Sent 19: Disgusted with Tasha but more disgusted with myself, I finally realized she would not return that night and went into The Sleeping Flamingo to drink myself to sleep.
Sent 20: She had not come home when I woke in mid-morning. 
Question: On which topic did Tasha think of herself as an expert because she studied it in school?.
A: 
Solevgrad jazz.