Secret Message to Neighbour:

Dear Neighbour,

You seem to live somewhere close and are spending time outside on this glorious Summer day. While I practice my singing on this same Summer day, I do so – perhaps unfortunately – with the windows open. I'm fully aware you can hear me repeating phrase after phrase, trying to get it right. This is in no way an invitation to sing yammer along. Try again after a couple of years of training and with an easier song.

Yours truly,
Singing Fifth Floor Inhabitant

(Readers, you can post your own Magical Message™ in the comments.)