I'm about to start playing soprano again with a large brass band, and I'm concerned with endurance and range. I'm playing on an older boosey & hawkes imperial Eb, with a curry 1 1/2cc mouthpiece. I generally practice everyday about 1hr. I get a great sound, and have a decent range, but I would like to build on this. I tend to use too much pressure, which can kill endurance. Any help specific to the soprano would be great. Thanks!