
It sounds like he may have been blowing some spittle out and accidentally engaged his lip embouchure thus inadvertently sounding his instrument. I know about these things as I used to play the trumpet, so please respect my authority on these matters. Thank you. :)
( , Mon 17 Mar 2014, 14:04, Reply)

You are absolutely right. I was just trying to provide an alternative explanation :)
( , Mon 17 Mar 2014, 17:49, Reply)