Dear Allen, 

I am writing to invite you to our school's music festival which will be held in the Music hall where we can play the piano <Opera ||> there. I wonder if this is your favorite song? I do hope that you can appear as my friend and perform with me together. Welcome to China!

All in all, I sincerely hope you can make the trip, if yes, we can meet next Sunday, otherwise please let me know. I am looking forward to your early reply. 

Best wishes, 
Li Hua

亲爱的艾伦，
    我写这封信是想邀请你来参加最近在我们学校举办的一个音乐节。
    音乐节将在我们学校的音乐大厅举行。你可以用钢琴演奏《歌剧Ⅱ》。这是你最喜欢的歌吗？我希望你作为我的朋友能够做好打算，和我一起玩。欢迎来到中国！
    总的来说，我真诚地希望你能够同意。如果你能来，请你在下周日和我见面。如果你有别的事情要忙，请告诉我。望尽快回信！
    祝你快乐！
                                                                                                                          你真诚的
                                                                                                                             李 华