kono uta o kiku tabi ni, koukou no tomodachi o omoidashimasu.

Every time I hear this song, I remember my friends from high school.

Breakdown of kono uta o kiku tabi ni, koukou no tomodachi o omoidashimasu.

• を: direct object particle
• 友とも達だち: friend
• の: possessive case particle
• この: this

Questions & Answers about kono uta o kiku tabi ni, koukou no tomodachi o omoidashimasu.

What does 〜たびに mean here?

〜たびに means every time... or whenever....

So:

• 聞くたびに = every time I listen to it / whenever I hear it

This pattern is used when something happens repeatedly each time another thing happens.

Examples:

• 行くたびに = every time I go
• 会うたびに = every time I meet
• そのたびに = each time / every time that happens

In this sentence, hearing the song repeatedly causes the speaker to remember their high school friends each time.

Why is it 聞くたびに and not 聞いたたびに?

With 〜たびに, Japanese normally uses the dictionary form of the verb, not the past form.

So:

• 聞くたびに = every time I listen
• not usually 聞いたたびに

This is because 〜たびに describes a repeated situation in a general way, not one specific completed event.

A good way to think about it is:

• Verb dictionary form + たびに = whenever that action happens

Other examples:

• 読むたびに = every time I read
• 見るたびに = every time I see
• 行くたびに = every time I go

What is the に in たびに doing?