I only bought this a few days ago & absolutely love it, there are 4 cd called rulin, smooth, trance nation & chill out with hits old & new. I havent bought a cd for a little while so wanted some good tracks with varied ers's & this is great as depends what mood you are in, chill out on weekends & trance on Fri & sat nights to get the party started. Each disk has 20 tracks on them and are all great & a bargain at 7.99. Delivery was super quick.