1. Famous from the Ford Focus ads, the Car Parts Orchestra (musicians who play on instruments made from car parts) is giving an open-air concert of classical music favourites, which an amazing musical experience for all the family!

2. Famous from the Ford Focus ads, the Car Parts Orchestra (musicians who play on instruments made from car parts) is giving an open-air concert of classical music favourites. An amazing musical experience for all the family!

请教老师，以上两种写法都正确吗？

如果正确，第一句   which is an 中is为何被省略掉？

                 第二句“An amazing musical experience for all the family!“ 没有主语和谓语，是否是省略句？为何使用省略句？