"American Idol" was a great show last night with the Top 9 Contestants performing songs that shaped Rock and Roll. I have to admit they all did an awesome job. I know that each year it is said that this is the best crop of talent in American Idol yet. I have watched "American Idol" since the beginning, and I have to admit this is one of the better groups of talent on "American Idol." So what did the contestants sing last night? Read on to find out.