| US Patent | Example of Related Subject Matter (Related Claim No. in Parentheses) |
| 8,805,559 | Electronic baby bedside music box with rotating mobile element repeatedly playing short pieces of music one by one in random order every time (1) Electronic baby bedside music box with rotating mobile element repeatedly playing short pieces of music in a group and replacing a piece in the group excessively repeated with now one (7) Electronic baby bedside music box with rotating mobile element replacing next piece music if necessary to continue a cradling tempo (17) |
| 9,367,282 | Synthesizer differently fluctuating pitch or timing of music from basic sequencer every time the same music is repeated to ease a pain due to otherwise mere repetition of the patterned same electronically generated music (1, 10, 18) |
| 9,728,171 | Player switching music piece downloaded from s server between a first group of music pieces without limitation and a second group of resembling music pieces (1, 9) |
| 10,032,442 | Original music piece group and newly formed music piece group including substituted piece are switched according to manual play mode setting (1, 7) A music piece downloaded through cellular phone is assigned priority (13, 14) |