This is the 15086th most frequent Russian word.
показаться
"Показаться" means "to seem" or "to appear."
In this sentence, "показалось" is used to express a subjective impression or feeling, indicating that the speaker had the sense or belief of hearing music.
Мне показалось, что я слышал музыку.
It seemed to me that I heard music.
Here, "покажется" refers to the potential perception or impression of strangeness, often used in hypothetical or conditional constructions.
Если тебе что-то покажется странным, скажи мне.
If something seems strange to you, tell me.
In this context, "показаться" indicates an outward appearance or impression that someone might give to others, which might not necessarily reflect their true nature.