英语翻译我今天五点半才下班,而音乐会七点半就开始了,所以你先去看音乐会吧,如果你晚上回来我们可以见一面,如果你不回来或回

I'm sorry that maybe you will go to the concert alone at 7:30pm.caurse I can't finish my job until 5:30pm.Shall we meet again after the concert?Sure if you won't come back or you just exhausted,we will meet tomorrow,OK?
或者更简洁,更口语化一点——
I am afraid that i have to work until 5:30pm today,but the concert starts at 7:30pm.Thus,you may go to the concert first and we will meet tonight ,or tomorrow if you are too tired.