以下是剑桥4小作文（写作部分）的一个范文：
题目：写一封信给你的笔友来描述你最近参加的一场音乐会。Dear Penpal,I hope this letter finds you well. Its been a while since we last communicated, so I wanted to share with you about a recent experience I had.Last weekend, I attended a music concert featuring my favorite artist, Adele. The show was held at the Staples Center in Los Angeles, and it was a night that I will never forget.From the moment Adele entered the stage, the entire audience was captivated by her soulful voice and authenticity. Her performance of her greatest hits was electrifying, and the energy in the crowd was indescribable. The entire arena was singing and dancing along to her music, and it truly felt like a once-in-a-lifetime experience.One of my favorite moments of the night was when Adele performed "Someone Like You," as the entire audience held up their cell phone lights and sang along. It was a beautiful moment of unity and emotion that I will never forget.Overall, the concert was an incredible experience, and I feel so lucky to have attended. I highly recommend going to see Adele in concert if you ever have the chance!I hope this letter finds you well and that we can catch up soon.Best,[Your name]