who makes these albums

how many of these albums can u get

1 easy to start - the e.n.d
2 another easy one - in silico
3 lets get older - hotel california
4 a nice hard one - tubular bells
5 exceptionaly hard now - takk
6 getting easier - black holes and revealations
7 an average one - Back To Bedlam
8 exceptionaly hard - one time for all time
9 now for those who havnt got one yet - la roux