US9,728,171



















What is claimed is:







1. An electronic device for playing a plurality of pieces of music downloaded from a music server through internet comprising:







a music data memory arranged to store data of a plurality of pieces of music, the stored pieces of music including pieces of music within a first group including pieces of music without limitation of resemblance for avoiding monotony and pieces of music within a second group including a new piece of music resembling other pieces of music in the second group;





a group former arranged to automatically determine the new piece of music to be included within the second group;





a controller arranged to automatically determine the next piece of music to be played among the pieces of music within the first group or the second group;





an operation portion arranged to be manually operated to set a playing mode according to the second group; and 





a playing mode selector arranged to normally select the first group for the controller determine the next piece of music within the first group, to select the second group for the controller determine the next piece of music within the second group in response to the operation portion setting the playing mode according to the second group, and to come back to the normal selection of the first group for the controller determine the next piece of music within the first group in response to the operation portion cancelling the setting.