Typical Listener - some easy clues, and didn't take too long to fill the grid and decipher the message given by the down clues, but the endgame is annoying.
I know what the shading is meant to show, but I must have missed something about the shading instructions as they don't look very precise. I have a decent approximation to the theme, and 57 shaded cells, but the correct result may be slightly different. As I get older, I don't worry about this so much - I solved the puzzle and enjoyed it.