An update: without USB I would not have had a 'search loop'. With USB I did have a 'search loop', which lasted about 4 minutes !! I do have a fast USB stick. Apparently the keyboard doesn't have a 'super fast' processor? But unfortunately you cannot interrupt the search. If the keyboard is searching, you cannot interrupt that process in any way and you cannot continue to play. Nothing works anymore. If you don't want to wait anymore, you'll have to turn the keyboard off and on.Conclusion: YAMAHA, please add. a CANCEL button while searching ....