"I will sing together with UB40 at the concert."
Translation:E hīmeni pū au me UB40 ma ka ʻaha mele.
Sometimes it's a fine distinction. E...ana (most of the time) is a simple future tense, and I usually translate it into English as "going to" do something. E tends to indicate that there is some sense of obligation, so I usually translate it as "will" instead of "going to." But often it is a pretty fine distinction, as in this sentence.