Theory:Doctor Who television discontinuity and plot holes/The Rings of Akhaten

Possibly their voices were amplified, and heard through an air corridor?
 * How does Clara suddenly knows how to fly the alien moped?
 * Why exactly do all the aliens suddenly starting singing wake up, when the old god is awoken, what exact purpose does it serve? And how do they suddenly all know it?
 * How can the song travel through space to the old god in the first place? And how come they can hear each other so well, on different asteroids, despite being at least several miles apart?
 * How were the aliens, the doctor and clara on the asteroids able to breath in space?? and how were the doctor and Clara able to breath when they were on the moped??
 * At the end of the episode, the doctor causes the God akhaten to implode. But wern't the asteriods in orbit around it?? Surly they are now just drifting endlessly through space???