My daughter started the trombone with a de Haske tutor book (I think in English it's called "Read, Listen and Play") which she used for about a year and a half. She has now progressed onto "real" music and I have to buy each piece individually. They are all pieces by contemporary French composers which with postage (I have failed to find an online site which sells them postage free) work out at between 15 and 20 euros each. Not only am I starting to find it rather expensive