翻译：
at the concert ：在演唱会上
例句：
1.We will be very embarrassed if we perform poorly at the concert.
咱们在音乐会上要是演奏不好，那就太难看了。
2.Footage of Chinese people expressing their hopes for a successful 2012 London Olympic Games was also shown at the concert.
演唱会上还播放了一段中国同胞祝愿2012年伦敦奥运会圆满举办的VCR。
3.Li performed 16 songs at the concert, which, to be honest, was far from perfect compared with professional singers. There were some notes broken or not in tune.
演唱会上，李易峰演绎了16首歌曲。平心而论，与专业歌手相比，他的表现距离完美还有很大差距，演唱中不乏一些破音和跑调。
4.So he took her up on her offer and showed up at the concert with corsage in hand. While on stage, Miley serenaded Matt with her song Adore You while he got down on one knee and presented the corsage.
于是马特应邀出现在了她的演唱会上，手上还拿了一个胸花。当马特单膝跪地为麦莉献上胸花的时候，麦莉也在台上以一首温柔的《Adore You》回赠给马特。