把非限定性定语从句改成一个句子

看清楚关系代词替换掉的内容（其实就是先行词），从句里的关系代词还原为名词，调整语序就行了。

Have you ever dreamed of playing in front of thousands of people at a concert, with everyone clapping and appreciating your music?

practising their music in someone's house is the first step to fame for a group of high-school students.

Later they may give performances in pubs or clubs, paid in cash.

The musicians were to play jokes on each other as well as play music, mostly based loosely on the Beatles.

However, after a year or so， becoming more serious about their work, the Monkees started to play and sing their own songs like a real band.

They produced a new record in 1996, celebrating their formal time as a real band.