I got presented, rather nicely, with fat cheque from the inland revenue, so I've decided to (against my better nature) buy a trumpet and start doing some orchestral stuff. The Cornet will definately remain as my primary instrument but owning a trumpet certainly opens many doors. That said, it would appear that simply owning a trumpet an blowing down it as appropriate doesn't quite cut it. I also need to be able to move notes around in my head!?! Is there a recognised way of learning to transpose at sight? I've got an excerpts book which I intent to start sightreading. Does anyone else have any suggestions?