Recently while surfing youtube I came across with a video of a fellow trumpeter called Trombone Shorty (really did not understand the name if he is a trumpet guy). The thing is he was doing a really long note with a technic I understand is called circular breath or circular breathing, which basically consists in breathing in and at the same time keep playing.
Here is the link, check around 5:20-550
Do any of you fellas know how to do it, and could you be willing to share your experience, is it useful? For what?