The Andromedas' physiology is such that they can hear radio waves.
Fortunately, they are blessed with rather sharp selectivity, otherwise
the brain chatter would have driven them all insane eons ago.

The favorite activity of the Andromeda is music; they love to sing,
and they sing like birds. But they have no capacity to create music
of their own, so they have learned to borrow from what they hear
in the air.