secret songs?

[ttsupra97]

why do the secret songs keep dissapering.. i get the 1st 3 all the time but then the others come and go,,, i dont kno why. can someone plz help me and tell me whats up with them
thanks

[insomniakxz]

the number of secret songs available depends on the number of credits you are in possession of.

[makaveli121212]

you lost some of your credits somehow...either a) you lost them to me in challenges 2) you spent them 3) you gave them away or g) the credit monster haxored you up

[Musical_Master]

AHHHHHH THE CREDIT MONSTER!!!!!!111