Can someone explain the intracacies of purchasing a French horn?

So I've been playing french horn since 5th grade and am now currently in 10th grade, so I may not be of much help; However, some is better than none :)

A: Well, french horn is in the key of F and if I'm not mistaken it is one of, if not the only, istrument in that key.

B: Between a double horn and a single horn there is some what of a difference. I've played on both and can say double is more advanced. Single horn is what some people start out on, but I've seen others go right to double. The difference is the double horn has an extra thumb valve and more tubing. This allows the play to get a better tone and to reach higher and lower notes. The double and single horn also have some of the same fingerings, but once you hit the G in the staff the fingerings change and once you hit the F below the staff they change. If your looking into buying one I reccomend seeing what kind he is playing in band first.

C:Personaly I love the double horn. In any aspect if your son plans on playing later in life he will need a double horn. Most hornist don't play on a single horn long and all professional istruments are double. Also be careful when buying istruments on line. Many times horns can come in much worse shape that what is given in the description. It's important to talk with some one about the brand you are buying too. I, myself, play on a Holton and love it but I've heard good things about Conn horns. Talking with local a french horn intructor can help with the next part.(your band director should have a list of local teachers or posibly your local music store may have a list) In my oppinion the best brand was Holton. Though Conns are not bad for the grade your son is in. I've played on Holton, Conn, Yamaha, and Jupiter horns, in that order from best to worst. Generally it is hard to find quality horns now. You can, but you have to be care full. Generally Horns from before 1980 are the best, but these can be hard to come by in good condition. Yamaha produces a steady sound but are more of a basic intrument. If you son plans on continuing this into high school I stongly reccommened getting a double horn and a Holton or a Conn (moslty a Holton).

I've hoped ive helped some and a really reccommend talking with your son's band director before making any purchases.

OH! And don't forget to tell your son to have fun! French horn is a hard instrument to play but its very rewarding!