Er... sorry for not being clear...

Is it because of that I can`t hit high G and A with a trumpet. By the way, I`ve started playing the trumpet a month ago

Er, if you started playing trumpet a month ago, I would be expecting D`s, E`s, and maybe F`s in the staff for the top of your range, and that`s only because you`ve played brass instruments before. Normally for a first-time brass player I would expect no more than an E in the staff to hit with CONSISTENCY. Probably the reason you can`t get out the G`s and A`s is just you haven`t been playing long enough. I can tell you, as someone who`s played all those instruments (except tuba) that trumpet and french horn are different from the other brass instruments in that they require a lot more commitment. You HAVE to practice every day if you want to be able to get up there. It`s not this bad for most people I talk to, but for me at least, if I miss even one day of trumpet practice, my range the next week goes down a full 3 or 4 whole steps.

Anyway, in reply to the original topic, I want to emphasize what Vasich said. If you pull the mouthpiece down to where you`ve only got a millimeter of top lip in there and then blow your head off, yeah, most people can squeek out a triple G. There are several other methods of pulling off those high notes that are not correct, too. If you can`t lip slur up to those notes, hold on to them until you run out of air, double tongue them, and do all that at a variety of dynamic levels, then they`re not in your effective range, and you should check if you`re "cheating" in order to get them out. Cheating includes pulling your top lip out of the mouthpiece, using excessive pressure, moving the mouthpiece side to side (that`s a sign of too much pressure), uneven corners (one side of your mouth is tighter than the other), or transferring too much of the pressure to your top lip (your trumpet should make between a 85º and 90º angle with your body, any more than that means you`re letting the weight of the horn press onto your top lip to get into the high range).
Lip slurs, flow studies, and pedal tones. Those things are the key to getting your range up. 2 octave scales help, too. Always make sure you do a proper warm up and warm down, and be patient, and you`ll get it. Just takes time.

Im a 8th grade band trumpetist. Anyways, all you have to do is blow fast and tighten your lips (roll in slowly) by blowing fast i mean squeez your stomach in and blow out really hard like your blowing out candles

Oh, one more thing I wanted to throw in.
If you play jazz, a jazz mouthpiece is great. Otherwise, stick to a classical mouthpiece, because the long-term effects of playing jazz mouthpieces are not good unless you are in fact a jazz player.
If you must have a shallow mouthpiece, I recommend a Marcinkiewicz. They will help you with the high register, but they still also maintain the low register better than most similar mouthpieces. http://www.marcinkiewicz.com

For all-around playing, though, I think I have truly found the ultimate mouthpiece. When I got my GR, my tone and range (in both directions) instantly improved quite a bit, and it also made it much easier to play with good tone at extreme (both soft and loud) dynamic levels. They`re kind of hard to get because as far as I know you HAVE to be fitted; I would NOT just order one off their website. Ask around and see if anyone in your area sells them. If they don`t, I think there`s a video on the website that can help you find the right one, and I`m pretty sure you can return them as long as they still look brand new if it doesn`t work for you. http://www.grmouthpieces.com
They`re expensive, yes, but really, my GR changed my life.
And before anyone tries to give me the "there is no perfect mouthpiece" speech, I`ve heard it, so save yourself the effort of typing it. But, just a few facts first. GR`s have something like 70 different sizes you can get, and that`s excluding the Custom series. Everyone I know that has played one prefers it over everything else, and it instantly improved my playing ability. It won`t make you a trumpet god, but I believe it will bring out all the potential you have.

Thanks! (to WillyD)

tighten your lips and blow faster air I play the trumpet

Empty your bowls (go to the washroom) before playing. I cant play the extremely high notes unless I do so. You will be able to stretch your diaphram more if you empty your insides. lol

I teach trumpet lessons and play in a ska band...

I`ve been playing since 6th grade. I`m 21 now, so, I`ve been playing on and off for 10 years. High school marching band wrecked my passion and caused me to not want to play for nearly five years - if I ever become a band director, I hope I don`t kill kids` passions and give them the desire to sell their instruments on eBay :P

Anyway -

Pressing the instrument extremely hard against your lips is NOT the way to go. When you press the instrument very hard against your lips, your lips press against your teeth, and your incisors can actually make a slight indentation on the inside of your lip. If you do this too much, your inner lips can even bleed a bit.

It`s not entirely a question of how hard and fast you blow, either - blowing hard and fast will generally give you a louder sound. You can blow as hard as you want, but if your lips are not pressed tight enough (NOT against the instrument - against each other, with a tiny little hole between them for air flow), you will not hit the notes. It should be your goal for your air stream to plainly be steady

Also, practice hitting as high a note as you are comfortable with, and hold it out for a long period of time. Then, try to do the same for the note up. This takes time, and your lips need to build strength and indurance. Don`t dread the notes; I know it`s habitual to become afraid you won`t hit a note you normally are not able to, but try to envision it in your mind and keep a clear tone while doing so.

Also - pick a song you enjoy playing and/or aspire to play that includes a high note or a few. It`s more fun to hit them in the right context. Playing`s so much more enjoyable than practicing. Try hitting high notes softly, then try loud. Try popping them, and then also try holding them out. It will give you better profiency.

Technically, there is no highest possible note on the trumpet. Trust me. If there was a "highest possible note", I surely would have found it by now. :P Most of the "registered" notes don`t go above double C, because people assume no one can really hit higher. Most music written does not go higher than that, as there`s not much use for it.

If you have a decent ear, I suggest listening to (then learning the music of) people like Louis Armstrong(but avoid his singing at all costs! It`s called "scat" for a reason...), Maynard Ferguson, Miles Davis, Dizzy Gillespie, and Fats Domino - they were some of the best, and hit some very high notes. If you cannot play something after hearing it (it`s okay, most people can`t), then buy some sheet music designed for jazz trumpet. There`s a book called Great Jazz Classics for trumpet which I recommend, if you can find it.

spelling mistake - "endurance", not "indurance" - I don`t want to be like those people who keep writing "amisher" :P

Aidyn
Fats Domino was a pianist, but I guess he could blow higher than Miles Davis. Most people could.

Ahha, yeah, I just realized the Fats Domino thing after I posted that.

There`s some other fat dude who played trumpet in the 50`s, who`s name was very similar, and I am drawing a blank on at the moment.

As for Miles Davis, I like his tone. Even if he didn`t hit notes as high as Louis, he still hit every note with such grace.

His name was Fats Navarro.

So, who has actually called him? and does his method work? I`m too lazy to call, so if anyone called and got better, tell me the method, or tips.

i have the indentation on my inner lip and is that mean i press too hard or im practicing too much or is it bad or normal or a good thing? just not sure..