In Brazil, the collect call is accompanied by a characteristic little song that no one else can hear. With RecargaPay, mobile operator, no one else will listen, because when you recharge your cell phone credits, you earn $ 5 to give to anyone and no longer have to receive collect calls. For this reason, we created MuMac, (the Museum of Music to Collect), which will eternalize the infamous little song that has marked many generations.   

In the museum, people found the stories of the artists who reproduced the music in art form and also portraits that portrayed them while the little song disappeared.