As Sakagami explains , after the Xbox 360 port of The Idolmaster was complete , key members of the development staff moved on to other projects .
Were unavailable to work on the game mechanics needed to produce additional songs for that game .
As Sakagami explains , after the Xbox 360 port of The Idolmaster was complete , key members of the development staff moved on to other projects and were unavailable to work on the game mechanics needed to produce additional songs for that game .