Questions & Answers about הערב אני רוצה לשבת בבית ולשמוע מוזיקה בשקט.
הערב literally means the evening, but in sentences like this it usually means this evening or tonight.
So it is not just naming the time of day in general. It points to the specific evening relevant to the speaker.
There is an important difference:
- הערב = this evening / tonight
- בערב = in the evening
So הערב is specific, while בערב is more general.
Compare:
- אני עובד בערב = I work in the evening
- הערב אני עובד = Tonight I’m working
In your sentence, the speaker means a particular evening, so הערב is the natural choice.