ongaku o kiku to, yaruki ga mashimasu.

direct object particle

Breakdown of ongaku o kiku to, yaruki ga mashimasu.

• が: subject particle
• 音楽おんがく: music
• 聞きく: to listen

Questions & Answers about ongaku o kiku to, yaruki ga mashimasu.

Why do we use the particle を after 音楽 in 音楽を聞く?

を marks the direct object of the verb – the thing that is directly affected by the action.

• 音楽を聞く literally = “to listen to music / to hear music.”
  Here, 音楽 is what you are listening to, so it takes を.

Compare:

• 音楽を聞く – you intentionally listen to music.
• 音楽が聞こえる – “I can hear music / music is audible.” (no intention; the sound just reaches you)

So を is correct here because you’re doing the deliberate action of 聞く on 音楽.

Why is 聞く in dictionary form before と instead of some other form?

The pattern dictionary form + と is a standard way to make a conditional in Japanese.

• 聞くと = “when I listen / if I listen / whenever I listen”

The rule is:

• Verb (dictionary form) + と, then result.

So the verb must be in its plain dictionary form (聞く, not 聞きます, not 聞いた) before と in this structure.

What kind of conditional is 〜と here? How is it different from 〜たら or 〜とき?