IMHO, I think the trumpet used to glorify and call up the saints will be unlike any other trumpet. It is a heavenly trumpet, meaning it will have no imperfections and will be tuned to a degree we are probably unaware exists. Also, I believe it's going to be supernaturally LOUD and come from high above! All believers anywhere on the planet will have no illusions about what it is.

The first time we hear the Lord's voice will be stunning. Immediately following the trumpet blast we will hear His voice hit our ears: "COME UP HERE!!!" This command i believe will be very similar to the one used to summon Lazarus from the dead in it's tone and authority. All the dead in Christ will streak skyward to our visible eyes perhaps if we are outside at the time. not even a millisecond later, we will follow them up as cloud and blue streak past us in blinding ferocity. We will be changed on the way up: from weak, frail, sin capable, but forgiven, mortals to: sinless, strong, refined, immortals. We probably won't feel immortal, but we will simply know that it is impossible for us to die. IMHO we will hear our names called and that trumpet blast will be very loud, and sound unlike any earthly trumpet in tune and pitch.