Questions & Answers about Я почти не слышу музыку в метро.
Yes. Russian often omits the subject pronoun when it is clear from the verb ending.
- слышу already means I hear / I am hearing
- so Почти не слышу музыку в метро is completely natural
Including я can make the sentence:
- a little more explicit
- slightly more emphatic
- useful for contrast, as in Я почти не слышу музыку, а он слышит
So я is not required, but it is not wrong at all.
почти не literally means almost not, but in natural English it is usually:
- hardly
- barely
- almost don’t
So Я почти не слышу музыку в метро means something like:
- I can barely hear music in the metro
- I hardly hear music in the metro
This is a very common Russian pattern:
- Я почти не сплю = I hardly sleep
- Он почти не ест мясо = He hardly eats meat