It's been a good five minutes since the last song on the CD ended. By now you've kind of relaxed yourself (and by relaxing we most likely mean planning on spending the next 3 hours looking for examples for all those YKTTWs), when, suddenly... is that... music? Congratulations. You have just discovered a Hidden Track, the trope where the Easter Egg and the Bonus Material make love inside a music album. Examples of Hidden Track include: