Lindoz, you're forgetting one thing - by loading your songs/styles into memory A,B, & C, then saving to SD, you can easily triple your storage from 1980 files to over 5900 files. In order to keep the tempo of each style true, simply go into the composer, rename, variation, and substitute the variation info with the proper tempo and any other information you may later need.There are other methods also, but this way is probably the easiest.