Good question. Fastest way so far: remove SD, delete those project folders. Or insert empty SD. You can store 24 projects per one SD card. Slower way: switch to patterns A on añl the tracls. press (*) + All drums, (*) + mute track 1/2/3. Save all: (*) > rec > rec. save pattern A into patterns B, C, etc up to Z: (*) > rec > B,etc up Z. Repeat same for other tracks