Why mama mia?

I watched mama mia in theatre and in cinema. THe songs sound better when singing live but in cinema you can see the sky and the blue water.
Mama mia make you not afraid of getting old, if you can still sing and dance of course...

p.s. According to the program 'Abba and mamamia', Meryl Streep said that she always wants to be a singer. No wonder that she sings so well.