They heard the sound of blowing air, then it stopped.
The hot air blown out of the case will heat the room it is in.
He blew air out of his mouth and went over the notes.
"That's why I figure he might not just be blowing hot air."
Blowing air through, he found it to produce the sound, very similar to human voice.
It makes a change from blowing hot air into his tank.
The velocity of the air blown can be up to 185 miles an hour.
"I didn't know it was about to blow air at me."
Different notes are played when you blow or suck air.
I had to walk away, blowing air out very fast and too shallow.