I'm trying to save my performance I made.

If you're using the XP-50: While in Performance mode, press Disk Utility, select 1:Write, select a User Performance No. where you want to save the performance, and press Enter. This will save the performance settings to the User Memory Bank.

If you want to save to disk instead, press Disk Utility, select 3:Save, select 4:Sound, select or enter a file name for saving, and press Enter. This will save everything -- all performances and patches currently saved in the User banks -- to the disk file name that you specified.

Note: If you have made changes to a performance or patch that you want to save to disk, it's a good idea to save the changes to the User banks first (the first procedure) before saving to disk (the second procedure).

Hope that helps.