a device for inducing better sleep embedded with music having a tempo of about sixty to about eighty beats - per - minute . listening to music with a tempo of approximately 60 to approximately 80 beats - per - minute results in significantly better sleep quality , better perceived sleep quality , longer sleep duration and greater sleep efficiency . embodiments of the device can include , among other things , an alarm clock , a pillow , mobile , sleep mask , crib or a stuffed toy for use with children . embodiments of the device including a travel clock , travel pillow , or mobile device allowing the device to be easily transported for purposes of inducing better sleep during travel are also contemplated .