Questions & Answers about Сегодня вечером у нас репетиция в большом зале.
In Russian it’s completely normal to combine a day word with a time-of-day word:
- сегодня вечером – this evening (today in the evening)
- завтра утром – tomorrow morning
- вчера ночью – last night
It isn’t redundant; it just specifies which evening: tonight, not yesterday evening or tomorrow evening. Structurally, сегодня means today, and вечером (literally in the evening) tells you the time of day. Together they are similar to English this evening / tonight.
Literally, у нас means by us / at our place / with us.
Russian usually expresses “to have” with a structure у + [person in genitive] + [thing], for example:
- у меня книга – I have a book (literally: by me [there is] a book)
- у нас репетиция – we have a rehearsal
- у них экзамен – they have an exam
So у нас is the standard way to say we have in many contexts, especially for scheduled events, possessions, or things happening “on our side”.