I think the Midi spot stuff is by far the best in the yamaha line up esp there midi files , i think the style file are good as well , if you want to buy some around hoildays they have 20% off weekends that will save you the premium blues very good if it is for a tyros 4 they are not quite up to all the style files yet but soon they will have all theres avail for T4 ALL MY STUFF I HAVE IS FORMATED FOR S910 but it works it in T4 , What i like you can here the file on the internet and if you have s910 or T4 yOU CAN HOOK YOUR KEYBOARS UP TO THE SITE AND HEAR THEN THRU YOUR BOARD .